Exam 1 Practice chemistry

8/10/2019 Exam 1 Practice chemistry

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(c) experiment(D) science(e) none of the above

1. Which of the following terms defines the amount of energy required to raise one

gram of water one degree on the Celsius scale?(a) Calorie(B) calorie(c) joule(d) kilocalorie(e) none of the above

2. Which of the following is the basic unit of temperature in the metric system?(A) Celsius degree (C)(b) Fahrenheit degree (F)

(c) Kelvin unit (K)(d) all of the above(e) none of the above

3. Which of the following is a unit that expresses the volume occupied by a cube1 centimeter on a side?

(a) cm2(B) cm3(c) mm2(d) mm3

(e) none of the above

4. Which of the following terms defines the amount of mass in a unit volume?(A) density(b) specific mass(c) specific gravity(d) specific volume(e) none of the above

5. Which of the following refers to a nondecimal system of measurement without anybasic unit for length, mass, or volume?

(A) English system(b) metric system(c) International System(d) all of the above(e) none of the above

6. What is the term for a statement of two exactly equal values?

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(A) exact equivalent(b) exact value(c) identical equivalent(d) identical value(e) none of the above

7. Which of the following is the basic unit of temperature in the English system?(a) Celsius degree (C)(B) Fahrenheit degree (F)(c) Kelvin unit (K)(d) all of the above(e) none of the above

8. Which of the following is the basic unit of mass in the metric system?(A) gram

(b) liter(c) meter(d) second(e) none of the above

9. Which of the following terms refers to the flow of energy from an object at a highertemperature to an object at a lower temperature?

(a) calorie(B) heat(d) joule

(c) specific heat(e) none of the above

10. Which of the following refers to a measurement system with seven base units?(a) English system(b) metric system(C) International System(d) all of the above(e) none of the above

11. Which of the following is a unit of energy in the SI system?

(a) Calorie(b) calorie(C) joule(d) kilocalorie(e) none of the above

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12. Which of the following is the basic unit of temperature in the SI system?(a) Celsius degree (C)(b) Fahrenheit degree (F)

(C) Kelvin unit (K)(d) all of the above(e) none of the above

13. Which of the following is the basic unit of volume in the metric system?(a) gram(B) liter(c) meter(d) second(e) none of the above

14. Which of the following is the basic unit of length in the metric system?(a) gram(b) liter(C) meter(d) second(e) none of the above

15. Which of the following is a decimal system of measurement with basic units forlength, mass, and volume?

(a) English system(B) metric system(c) troy system(d) all of the above(e) none of the above

16. What is the term for the relationship between a fraction and its inverse?(a) percent(b) proportion(c) ratio(D) reciprocal


17. Which of the following is the basic unit of time in the metric system?(a) gram(b) liter(c) meter(D) second

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18. Which of the following terms defines the ratio of the density of a substancecompared to the density of water at 4 C?

(a) density(b) specific mass(C) specific gravity(d) specific volume(e) none of the above

19. Which of the following terms defines the amount of energy required to raise onegram of any substance one degree on the Celsius scale?

(a) calorie(b) heat(C) specific heat(d) joule(e) none of the above

20. Which of the following terms expresses the average energy of molecules in motion?(a) heat(b) joule(c) specific heat

(D

) temperature(e) none of the above

21. What is the term for a systematic method of problem solving which proceeds froma given value to a desired value by the conversion of units?

(a) algebraic analysis(b) metric analysis(c) problem analysis(D) unit analysis(e) none of the above

22. What is the term for a statement of two equivalent quantities?(a) unit analysis(B) unit equation(c) unit equivalent(d) unit factor(e) none of the above

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23. What is the term for the ratio of two equivalent quantities?(a) unit analysis(b) unit equation(c) unit equivalent(D) unit factor (conversion factor)


24. What is the term for the technique of determining the volume of a solid or a gas bymeasuring the volume of water it displaces?

(a) volume by calculation(b) volume by difference(C) volume by displacement(d) volume by immersion(e) none of the above

3.1 Basic Units and Symbols

1. Which of the following is a currently accepted basic unit and symbol in themetric system?

(a) meter (m)(b) gram (g)(c) liter (L)(D) all of the above(e) none of the above

2. Which of the following is a currently accepted basic unit and symbol in the

metric system?(a) centimeter (cm)(b) kilogram (kg)(c) milliliter (mL)(d) all of the above(E) none of the above

3. Which of the following is a currently accepted basic unit and symbol in themetric system?

(a) decimeter (dm)

(b) gram (gm)(C) liter (L)(d) all of the above(e) none of the above

4. What is the symbol for the metric unit micrometer?(a) cm(b) mm

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(c) Mm(D) m(e) none of the above

5. What is the symbol for the metric unit nanogram?

(a) mg(b) Ng(C) ng(d) g(e) none of the above

6. What is the symbol for the metric unit microliter?(a) cL(b) mL(c) ML(D) L


7. What is the name corresponding to the metric symbol km?(a) kilomega(B) kilometer(c) kilomicro(d) kilomilli(e) none of the above

8. What is the name corresponding to the metric symbol dg?(a) decagram(B) decigram(c) dekagram(d) dekigram(e) none of the above

9. What is the name corresponding to the metric symbol mL?(a) megaliter(b) metroliter(c) microliter(D) milliliter


10. What physical quantity is expressed by the metric unit centimeter?(A) length(b) mass(c) volume(d) density

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11. What physical quantity is expressed by the metric unit kilogram?(a) length(B) mass

(c) volume(d) density(e) none of the above

12. What physical quantity is expressed by the metric unit milliliter?(a) length(b) mass(C) volume(d) density(e) none of the above

13. Which of the following is the best estimate for the diameter of a 5 coin?(a) 0.5 cm(B) 2 cm(c) 5 cm(d) 10 cm(e) 20 cm

14. Which of the following is the best estimate for the mass of a 5 coin?(a) 0.5 g

(b) 1 g(C) 5 g(d) 20 g(e) 50 g

15. Which of the following is the best estimate for the volume corresponding to20 drops from an eyedropper?

(A) 1 mL(b) 10 mL(c) 100 mL(d) 1000 mL

(e) 10,000 mL

3.2 Metric Conversion Factors

16. According to the metric system, 1 _____ = 1,000,000,000,000 m.(A) Tm

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(b) Gm(c) Mm(d) pm(e) none of the above

17. According to the metric system, 1 _____ = 1,000,000,000 g.(a) Tg(B) Gg(c) Mg(d) ng(e) none of the above

18. According to the metric system, 1 _____ = 1,000,000 L.(a) TL(b) GL

(C) ML(d) L(e) none of the above

19. According to the metric system, 1 m = 10 _____.(a) cm(B) dm(c) km(d) mm(e) none of the above

20. According to the metric system, 1 g = 100 _____.(A) cg(b) dg(c) kg(d) mg(e) none of the above

21. According to the metric system, 1 L = 1000 _____.(a) cL(b) dL

(c) kL(D) mL(e) none of the above

22. According to the metric system, 1 s = 1 106_____.(a) Ms(B) s

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(c) ns(d) ps(e) none of the above

23. According to the metric system, 1 s = 1 109_____.

(a) Gs(b) s(C) ns(d) ps(e) none of the above

24. According to the metric system, 1 s = 1 1012_____.(a) Ts(b) s(c) ns

(D) ps(e) none of the above

31. If a 20.0 mL test tube measures 15.0 cm, what is the length in meters?(A) 0.150 m(b) 1.50 m(c) 15.0 m(d) 1500 m(e) none of the above

32. If a 250 mL beaker weighs 95.4 g, what is the mass in kilograms?(A) 0.0954 kg(b) 0.954 kg(c) 95.4 kg(d) 95,400 kg(e) none of the above

33. If a 125 mL Erlenmeyer flask weighs 88.5 g, what is the volume in liters?(A) 0.125 L(b) 1.25 L(c) 125 L

(d) 125,000 L(e) none of the above

34. If an automobile airbag inflates in 25 s, what is the time in seconds?(A) 0.000 025 s(b) 0.000 25 s(c) 25,000 s

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(d) 1.18 101nm(e) 1.18 103nm

41. If the radius of a potassium atom is 2.27 107mm, what is the radius in m?(a) 2.27 1016m

(b) 2.27 1010m(C) 2.27 104m(d) 2.27 101m(e) 2.27 105m

42. If the radius of an oxygen atom is 6.60 1010dm, what is the radius in nm?(a) 6.60 1011nm(b) 6.60 105nm(C) 6.60 102nm(d) 6.60 101nm

(e) 6.60 104nm

43. Which of the following English-metric equivalents is correct?(a) 1 in. = 2.54 cm(b) 1 lb = 454 g(c) 1 qt = 946 mL(D) all of the above(e) none of the above

44. Which of the following English-metric equivalents is correct?

(a) 1 in. = 2.46 cm(b) 1 lb = 446 g(C) 1 qt = 946 mL(d) all of the above(e) none of the above

45. Which of the following English-metric equivalents is notcorrect?(a) 1 in. = 2.54 cm(b) 1 lb = 454 g(C) 1 qt = 954 mL(d) 1 sec = 1.00 s(e) none of the above

46. Which of the following is a unit factor corresponding to the unit equation:1 meter = 39.4 inches?

(a) 1 m/1 in.(B) 1 m/39.4 in.(c) 39.4 in./39.4 m

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(d) 1 in./39.4 m(e) 1 in./1 m

47. Which of the following is a unit factor corresponding to the unit equation:1 yard = 0.914 meter?

(a) 1 m/1 yd(b) 1 m/0.914 yd(c) 0.914 yd/0.914 m(D) 1 yd/0.914 m(e) 1 yd/1 m

48. Which of the following is a unit factor corresponding to the unit equation:1 mile = 1.61 kilometers?

(a) 1 mi/1 km(B) 1 mi/1.61 km(c) 1.61 mi/1.61 km

(d) 1 km/1.61 mi(e) 1 km/1 mi

49. Which of the following unit factors is derived from 2.2 pounds = 1 kilogram?(a) 1 kg/1 lb(B) 1 kg/2.2 lb(c) 1 lb/1 kg(d) 1 lb/2.2 kg(e) none of the above

50. Which of the following unit factors is derived from 1.06 quarts = 1 liter?(a) 1 L/1 qt(B) 1 L/1.06 qt(c) 1 qt/1 L(d) 1 qt/1.06 L(e) none of the above

51. Which of the following unit factors is derived from 1 hour = 3600 seconds?(a) 1 hour/1 second(b) 1 second/3600 hours(c) 3600 hours/1 second

(d) 3600 hours/3600 seconds(E) none of the above

52. If a copper wire is 195 cm long, what is the length in inches? (1 in = 2.54 cm)(a) 43.0 in.(B) 76.8 in.(c) 195 in.

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(d) 495 in.(e) 885 in.

53. If a silver chain has a mass of 25.0 g, what is the mass in pounds (1 lb = 454 grams)?(A) 0.0551 lb

(b) 0.0264 lb(c) 18.1 lb(d) 37.8 lb(e) 11,400 lb

54. If a mineral water bottle contains 375 mL, what is the volume in quarts (1 quart =946 mL)?

(A) 0.396 qt(b) 0.826 qt(c) 1.21 qt

(d) 2.52 qt(e) 355,000 qt

55. If a chemistry student weighs 155 lb, what is the mass in kilograms (1 lb = 454grams)?

(a) 0.341 kg(b) 0.394 kg(C) 70.4 kg(d) 341 kg(e) 70,400 kg

56. If a mineral water bottle contains 2.00 L, what is the volume in quarts? (1L = 1.06 qt)(a) 1.06 qt(b) 1.89 qt(C) 2.11 qt(d) 2110 qt(e) 1,890,000 qt

57. If the free-throw line is 15.0 feet from the basketball rim, what is the distance incentimeters? (1 in = 2.54 cm)

(a) 0.396 cm

(b) 0.492 cm(c) 3.18 cm(d) 70.9 cm(E) 457 cm

73. If the density of methyl alcohol is 0.813 g/mL, which of the following is a relatedunit factor?

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(a) 1 g/1 mL(b) 1 g/0.813 mL(C) 0.813 g/1 mL(d) 0.813 g/0.813 mL(e) 0.813 mL/1 g

74. If the density of air is 1.29 g/L, which of the following is a related unit factor?(a) 1 g/1 L(b) 1 g/1.29 L(C) 1.29 g/1 L(d) 1.29 g/1.29 L(e) 1.29 L/1 g

75. If the density of silver is 10.5 g/cm3, which of the following is a related unit factor?(a) 1 g/1 mL

(b) 1 g/10.5 mL(C) 10.5 g/1 mL(d) 10.5 g/10.5 mL(e) 10.5 mL/1 g

76. The density of water at 3.98 C is 1.00 g/mL. What is the density in g/cm3?(A) 1.00 g/cm3(b) 2.54 g/cm3(c) 3.98 g/cm3(d) 16.4 g/cm3

(e) 62.4 g/cm3

77. A 10.0 cm3volume of alcohol has a mass of 7.05 g. What is the density of the alcoholin grams per cubic centimeter?

(a) 0.0705 g/cm3(B) 0.705 g/cm3(c) 7.05 g/cm3(d) 10.0 g/cm3(e) 70.5 g/cm3

78. A 10.0 mL volume of mercury has a mass of 0.136 kg. What is the density ofmercury in grams per milliliter?

(a) 1.36 g/mL(b) 7.35 g/mL(C) 13.6 g/mL(d) 73.5 g/mL(e) 136 g/mL

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79. A rectangular block of aluminum has a mass of 39.589 g and measures 5.10 cm by2.50 cm by 1.15 cm. Find the density of the aluminum block.

(a) 0.370 g/cm3(B) 2.70 g/cm3(c) 3.11 g/cm3

(d) 14.7 g/cm3(e) 22.3 g/cm3

80. A rectangular block of copper has a mass of 143.584 g and measures 5.05 cm by 2.55cm by 1.25 cm. Find the density of the copper block.

(a) 0.112 g/cm3(B) 8.92 g/cm3(c) 11.1 g/cm3(d) 28.4 g/cm3(e) 29.0 g/cm3

81. Osmium is one of the most dense elements (22.5 g/cm3). What is the mass of 10.0cm3of the metal?

(a) 0.444 g(b) 2.25 g(c) 22.5 g(D) 225 g(e) 444 g

82. The density of ethyl ether is 0.714 g/mL. What is the mass of 10.0 mL of ether?(a) 0.0714 g(b) 1.40 g(C) 7.14 g(d) 14.0 g(e) 71.4 g

83. The density of ethyl alcohol is 0.789 g/mL. What is the volume of 35.5 g of ethylalcohol?

(a) 2.80 mL(b) 4.50 mL(c) 28.0 mL(D) 45.0 mL

(e) 280 mL

84. Platinum is one of the most dense elements (d= 21.5 g/cm3). What is the volume ofa 10.0 g sample of the metal?

(A) 0.465 cm3(b) 2.15 cm3(c) 21.5 cm3

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(d) 215 cm3(e) 465 cm3

85. Magnesium is one of the least dense elements (d= 1.74 g/cm3). What is the volumeof a 10.0 g sample of the metal?

(A) 5.75 cm3(b) 10.0 cm3(c) 17.4 cm3(d) 57.5 cm3(e) 174 cm3

86. A glass cylinder contains four liquid layers: mercury (d= 13.6 g/mL), chloroform (d= 1.49 g/mL), water (d= 1.00 g/mL), ether (d= 0.708 g/mL). If a piece of ice(d= 0.917 g/mL) is dropped into the cylinder, where does it come to rest?

(a) on top of the mercury layer

(b) on top of the chloroform layer(C) on top of the water layer(d) on top of the ether layer(e) on the bottom of the cylinder

87. A glass cylinder contains four liquid layers: mercury (d= 13.6 g/mL), chloroform (d= 1.49 g/mL), water (d= 1.00 g/mL), ether (d= 0.708 g/mL). If an aluminum bead(d= 2.70 g/mL) is dropped into the cylinder, where does it come to rest?

(A) on top of the mercury layer(b) on top of the chloroform layer(c) on top of the water layer(d) on top of the ether layer

(e) on the bottom of the cylinder

88. A glass cylinder contains four liquid layers: mercury (d= 13.6 g/mL), chloroform (d= 1.49 g/mL), water (d= 1.00 g/mL), ether (d= 0.708 g/mL). If a piece of plastic (d= 1.15 g/mL) is dropped into the cylinder, where does it come to rest?

(a) on top of the mercury layer(B) on top of the chloroform layer(c) on top of the water layer(d) on top of the ether layer(e) on the bottom of the cylinder

89. A glass cylinder contains four liquid layers: mercury (d= 13.6 g/mL), chloroform (d= 1.49 g/mL), water (d= 1.00 g/mL), ether (d= 0.708 g/mL). If a gold nugget (d=18.9 g/mL) is dropped into the cylinder, where does it come to rest?

(a) on top of the mercury layer(b) on top of the chloroform layer(c) on top of the water layer

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(d) on top of the ether layer(E) on the bottom of the cylinder

90. What are the freezing point and boiling point of water on the Fahrenheit scale?

(a) 32 F and 212 F(b) 0 F and 100 F(c) 0 F and 212 F(d) 32 F and 100 F(E) 32 F and 212 F

91. What are the freezing point and boiling point of water on the Celsius scale?(A) 0 C and 100 C(b) 0 C and 212 C(c) 32 C and 100 C

(d) 32 C and 212 C(e) 273 C and 373 C

92. What are the freezing point and boiling point of water on the Kelvin scale?(a) 0 K and 100 K(b) 0 K and 273 K(c) 100 K and 273 K(d) 100 K and 373 K(E) 273 K and 373 K

93. Table salt melts at 801 C. What is the melting point on the Fahrenheit scale?(a) 427 F(b) 1384 F(c) 1410 F(D) 1470 F(e) 1490 F

94. An antifreeze solution freezes at 100 C. What is the freezing point on theFahrenheit scale?

(a) 212 F(B) 148 F(c) 88 F(d) 82 F(e) 73 F

95. Aluminum melts at 1220 F. What is the melting point on the Celsius scale?

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(a) 646 C(B) 660 C(c) 696 C(d) 2138 C(e) 2164 C

96. Rubbing alcohol freezes at 129 F. What is the freezing point on the Celsius scale?(a) 290 C(b) 200 C(c) 103 C(D) 89.4 C(e) 54 C

97. Liquid hydrogen boils at 252 C. What is the boiling point on the Kelvin scale?(a) 525 K

(b) 252 K(c) 21 K(D) 21 K(e) 525 K

98. Liquid argon boils at 186 C. What is the boiling point on the Kelvin scale?(a) 459 K(b) 186 K(c) 87 K(D) 87 K

(e) 459 K

99. A rare metal alloy is a superconductor at 225 C. What is the temperature on theKelvin scale?

(a) 498 K(b) 225 K(c) 48 K(D) 48 K(e) 498 K

100. Liquid helium boils at 4 K. What is the boiling point on the Celsius scale?

(a) 277 C(B) 269 C(c) 4 C(d) 269 C(e) 277 C

101. Liquid krypton boils at 121 K. What is the boiling point on the Celsius scale?

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(a) 394 C(B) 152 C(c) 121 C(d) 152 C(e) 394 C

102. A rare metal alloy is a superconductor at 55 K. What is the temperature on theCelsius scale?

(a) 328 C(B) 218 C(c) 55 C(d) 218 C(e) 328 C

103. Which of the following can express the totalamount of heat energy in a sealed,

insulated chamber?(a) 20.0 C(b) 68.0 F(c) 293.0 K(D) 20.0 kcal(e) all of the above

104. Which of the following can express the averageamount of heat energy in a sealed,insulated chamber?

(A) 20.0 C(b) 68.0 cal(c) 293.0 kcal(d) 20.0 J(e) all of the above

105. When 100.0 g of gasoline undergoes combustion, 9560 kJ of energy are released.Express the heat released in kilocalories. (Given: 4.184 J = 1 cal)

(A) 2.28 103kcal(b) 2.28 106kcal(c) 2.28 109kcal(d) 4.00 104kcal(e) 4.00 107kcal

106. How many kilocalories of heat are required to raise 250.0 g of water from 20.0 C to75.0 C?

(a) 0.220 kcal(b) 4.55 kcal(c) 5.00 kcal(D) 13.8 kcal

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(e) 18.8 kcal

107. How many kilocalories of heat are released when 125 g of water cools from 100.0 Cto 19.5 C?

(a) 0.644 kcal

(b) 1.55 kcal(c) 2.44 kcal(D) 10.1 kcal(e) 12.5 kcal

108. The specific heat of ice is 0.492 cal/(g C). How many calories of heat are requiredto raise 100.0 g of ice from 20.0 C to 0.5 C?

(a) 2.52 cal(b) 10.4 cal(c) 49.2 cal(D) 959 cal(e) 3960 cal

109. A 100.0 g sample of aluminum released 1680 calories when cooled from 100.0 C to20.0 C. What is the specific heat of the metal?

(a) 0.168 cal/(g C)(B) 0.210 cal/(g C)(c) 0.840 cal/(g C)(d) 4.76 cal/(g C)(e) 21.0 cal/(g C)

110. A 100.0 g sample of tin released 394 calories of heat when cooled from 100.0 C to

24.5 C. What is the specific heat of the metal?(a) 0.0394 cal/(g C)(B) 0.0522 cal/(g C)(c) 0.161 cal/(g C)(d) 5.22 cal/(g C)(e) 19.2 cal/(g C)

111. A 250.0 g sample of copper released 1830 calories of heat when cooled from100.0 C to 20.5 C. What is the specific heat of the metal?

(a) 0.0732 cal/(g C)

(B) 0.0921 cal/(g C)(c) 0.357 cal/(g C)(d) 10.9 cal/(g C)(e) 23.0 cal/(g C)

112. Which of the following are basic units and symbols in the metric system?(a) centimeter (cm), gram (g), liter (L)(b) centimeter (cm), gram (g), milliliter (mL)

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(C) meter (m), gram (g), liter (L)(d) meter (m), gram (g), liter (l)(e) The metric system does not have basic units.

113. Which of the following are basic units and symbols in the English system?

(a) inch (in.), ounce (oz), pint (pt)(b) foot (ft), pound (lb), quart (qt)(c) yard (yd), pound (lb), gallon (gal)(d) mile (mi), ton (ton), gallon (gal)(E) The English system does not have basic units.

114. Which of the following are basic units and symbols in the International system?(a) centimeter (cm), gram (g), second (s)(b) meter (m), gram (g), second (s)(C) meter (m), kilogram (kg), second (s)

(d) kilometer (km), kilogram (kg), second (s)(e) The International system does not have basic units.

115. Which of the following is equivalent to the volume of a cube 1 cm on a side?(a) 1 L(b) 1 cL(c) 1 dL(d) 1 kL(E) 1 mL

116. Which of the following is equivalent to the volume of a cube 10 cm on a side?(A) 1 L(b) 1 cL(c) 1 dL(d) 1 kL(e) 1 mL

117. Which of the following is equivalent to the volume of a 1.00-L flask?(a) 1.00 cm3(b) 10.0 cm3(c) 100 cm3

(d) 946 cm3(E) 1000 cm3

118. How many significant digits are justified by the unit factor 1 m/100 cm?(a) 1(b) 2(c) 3

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(D) infinite(e) impossible to determine

119. How many significant digits are justified by the unit factor 1 lb/454 g?(a) 1

(b) 2(C) 3(d) infinite(e) impossible to determine

120. In performing a multistep calculation, when should you round off the answer in thecalculator display?

(a) after each step in the calculation(b) after the first unit factor(c) after the second unit factor

(D) after the final calculation(e) none of the above

121. The distance from Earth to the Sun is 1.50 108km. What is the distance expressedin gigameters? (Given: 1 Gm = 1 1012m)

(A) 1.50 101Gm(b) 1.50 102Gm(c) 1.50 106Gm(d) 1.50 1014Gm(e) 1.50 1017Gm

122. The radius of a nickel atom is 1.25 108cm. What is the radius expressed inpicometers? (Given: 1 m = 1 1012pm)

(a) 1.25 1020pm(b) 1.25 1018pm(c) 1.25 1010pm(D) 1.25 102pm(e) 1.25 104pm

123. A sheet of aluminum foil measures 12.0 in. by 10.0 in. and has a volume of 0.0709in.3. What is the thickness of the foil? (Sec. 3.5)(a) 1.69 103in.(b) 1.69 103in.2(c) 5.91 104in.(D) 5.91 104in.2(e) 5.91 104in.3

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3. Which of the following is an official quantity in SI?(a) amount of substance(b) electric current(c) light intensity(d) temperature

(E) all of the above

4. Which of the following is a base unit in SI?(a) calorie(B) kilogram(c) liter(d) millimeter(e) none of the above

5. Which of the following is a base unit in SI?

(a) centimeter(b) degree Celsius(c) gram(D) second(e) none of the above

6. Which of the following is a base unit in SI?(a) ampere(b) candela(c) Kelvin

(d) mole(E) all of the above

1. Which running competition distance in the Olympic Summer Games is nearly equalto 440 yards?

(a) 100 meters(b) 200 meters(C) 400 meters(d) 1000 meters(e) 2000 meters

2. Which swimming competition distance in the Olympic Summer Games isapproximately equal to 100 yards?

(A) 100 meters(b) 200 meters(c) 500 meters(d) 50 kilometers(e) 100 kilometers

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3. Which skiing competition in the Olympic Winter Games is approximately equal to10 kilometers?

(a) 5000 yards(B) 10,000 yards

(c) 10 miles(d) 15 miles(e) 20 miles

4. Which of the following is a running event in the Olympic Summer Games?(a) 100 inches(b) 100 feet(c) 100 yards(D) 100 meters(e) 100 miles

5. Which of the following is a swimming event in the Olympic Summer Games?(a) 50 yards(b) 100 yards(c) 200 yards(d) 400 yards(E) 400 meters

6. Which of the following is a skiing event in the Olympic Winter Games?(A) 50 kilometers(b) 50 miles(c) 5000 feet(d) 500 yards(e) 1000 yards

1. At which of the following temperatures is it most economical to fill a gas tank?(A) 40 F(b) 50 F(c) 60 F(d) 70 F(e) 100 F

2. With the exception of ice floating in water, what is the only other substance that isless dense as a solid and floats in its liquid?

(a) acetone(B) ammonia(c) chloroform(d) ethanol

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(e) ether

3. What are the only two liquids that violate the principle of greater density attemperatures near their freezing points?

(a) acetone and turpentine

(B) ammonia and water(c) chloroform and ether(d) ethanol and methanol(e) gasoline and diesel fuel

1. Which of the following terms is a metric unit of length?(A) centimeter(b) gram(c) milliliter(d) second


2. What is the term for a statement of two exactly equal values?(A) exact equivalent(b) exact value(c) identical equivalent(d) identical value(e) none of the above

3. What is the term for a number that indicates a value is multiplied by itself one or

more times?(A) exponent(b) power of 10(c) reciprocal(d) scientific notation(e) none of the above

4. Which of the following terms is a metric unit of mass?(a) centimeter(B) gram(c) milliliter

(d) second(e) none of the above

5. What is the general term for any device that records a measurement?(a) appliance(B) instrument(c) technology

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(d) tool(e) none of the above

6. What is the term for the amount of substance measured by a laboratory balance?(a) length(B) mass(c) volume(d) weight(e) none of the above

7. What is the term for a numerical value and unit that expresses a mass, length, orvolume?

(a) assessment

(b) estimation(C) measurement(d) quantity(e) none of the above

8. Which of the following terms is a metric unit of volume?(a) centimeter(b) gram(C) milliliter(d) second


9. What is the term for the digits in a measurement that exceed the certainty of theinstrument?

(a) inexact digits(B) nonsignificant digits(c) significant digits(d) uncertain digits(e) none of the above

10. What is the term that expresses the amount of a single quantity compared to an

entire sample?(A) percent(b) proportion(c) quotient(d) reciprocal(e) none of the above

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17. What is the term for a systematic method of problem solving which proceeds from

a given value to a desired value by the conversion of units?(a) algebraic analysis(b) conversion analysis

(c) problem analysis(D) unit analysis(e) none of the above

18. What is the term for a statement of two equivalent quantities?(a) unit analysis(B) unit equation(c) unit equivalent(d) unit factor


19. What is the term for the ratio of two equivalent quantities?(a) unit analysis(b) unit equation(c) unit equivalent(D) unit factor(e) none of the above

20. What is the term for the gravitational force of attraction between an object and

Earth?(a) length(b) mass(c) volume(D) weight(e) none of the above

1. Which of the following instruments provides an exact measurement?(a) metric ruler(b) metric balance(c) metric pipet

(d) all of the above(E) none of the above

2. Which of the following instruments provides an exact measurement?(a) millimeter ruler(b) milligram balance(c) milliliter pipet

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(d) all of the above(E) none of the above

3. Which of the following quantities can be measured exactly?(a) length

(b) mass(c) volume(d) time(E) none of the above

4. Which of the following metric rulers has the least uncertainty?(a) Ruler A, 1 cm(b) Ruler B, 0.1 cm(c) Ruler C, 0.5 cm(D) Ruler D, 0.05 cm

(e) Ruler E, 5 cm

5. Which of the following balances has the least uncertainty?(A) analytical balance, 0.0001 g(b) triple-beam balance, 0.01 g(c) double-pan balance, 1 g(d) electronic balance, 0.001 g(e) platform balance, 0.1 g

6. Which of the following volume instruments has the least uncertainty?

(a) buret, 0.01 mL(b) graduated cylinder, 0.5 mL(C) hypodermic syringe, 0.001 mL(d) volumetric flask, 0.05 mL(e) volumetric pipet, 0.1 mL

7. How many significant digits are in the length measurement 10.01 meters?(a) 1(b) 2(c) 3(D) 4


8. How many significant digits are in the length measurement 100.60 centimeters?(a) 1(b) 2(c) 3(d) 4

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(E) none of the above

9. How many significant digits are in the length measurement 0.0100 meter?(a) 1(b) 2

(C) 3(d) 4(e) none of the above

10. How many significant digits are in the mass measurement 30.406 grams?(a) 1(b) 2(c) 3(d) 4

(E) none of the above

11. How many significant digits are in the mass measurement 0.050 gram?(a) 1(B) 2(c) 3(d) 4(e) none of the above

12. How many significant digits are in the mass measurement 1.050 grams?

(a) 1(b) 2(c) 3(D) 4(e) none of the above

13. How many significant digits are in the volume measurement 4040.0 liters?(a) 2(b) 3(c) 4(D) 5


14. How many significant digits are in the volume measurement 0.250 liter?(a) 1(b) 2(C) 3(d) 4

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27. Round off the following measurement to three significant digits: 3261 mL.(a) 320 mL(b) 326 mL(c) 327 mL(D) 3260 mL

(e) 3270 mL

28. Add 25.5 cm to 0.50 cm and round off the answer.(a) 26 cm(B) 26.0 cm(c) 26.05 cm(d) 26.1 cm(e) 27 cm

29. Add 7.77 g to 11.666 g and round off the answer.

(a) 19.0 g(b) 19.4 g(c) 19.43 g(D) 19.44 g(e) 19.436 g

30. Add 250.0 mL to 5.00 mL and round off the answer.(a) 250 mL(b) 255 mL(C) 255.0 mL(d) 255.00 mL(e) 256 mL

31. Subtract 0.25 cm from 11.5 cm and round off the answer.(a) 11 cm(b) 11.0 cm(c) 11.2 cm(d) 11.25 cm(E) 11.3 cm

32. Subtract 0.25 g from 31.116 g and round off the answer.

(a) 30.8 g(B) 30.87 g(c) 30.866 g(d) 30.9 g(e) 31 g

33. Subtract 10.0 mL from 45.65 mL and round off the answer.

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(a) 35 mL(b) 35.6 mL(c) 35.65 mL(D) 35.7 mL(e) 36 mL

34. Multiply 5.55 cm times 2 cm and round off the answer.(A) 10 cm2(b) 10.0 cm2(c) 11 cm2(d) 11.0 cm2(e) 11.1 cm2

35. Multiply 1.05 cm times 2.2 cm and round off the answer.(a) 2 cm2

(b) 2.0 cm2(C) 2.3 cm2(d) 2.31 cm2(e) 3 cm2

36. Multiply 2.505 cm times 1.75 cm and round off the answer.(a) 4.0 cm2(b) 4.00 cm2(C) 4.38 cm2(d) 4.384 cm2

(e) 4.40 cm2

37. Multiply 2.505 m by 1.75 m by 1.0 m and round off the answer.(a) 4 m3(B) 4.4 m3(c) 4.38 m3(d) 4.384 m3(e) 4.0 m3

38. Multiply 1.50 m by 1.05 m by 1.00 m and round off the answer.(a) 1.575 m3(B) 1.58 m3(c) 1.6 m3(d) 1.60 m3(e) 2 m3

39. Multiply 7.2 m by 3.75 m by 1.555 m and round off the answer.(a) 41.9 m3

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(b) 41.99 m3(C) 42 m3(d) 42.0 m3(e) 42.00 m3

40. Divide 124.7 miles by 2.25 hours and round off the answer.(a) 50 mi/h(b) 55 mi/h(c) 55.0 mi/h(D) 55.4 mi/h(e) 55.5 mi/h

41. Divide 2882 centimeters by 14.575 seconds and round off the answer.

(a) 197 cm/s(B) 197.7 cm/s(c) 197.74 cm/s(d) 198 cm/s(e) 198.0 cm/s

42. Divide 11.375 grams by 10.0 milliliters and round off the answer.(a) 1.1 g/mL(b) 1.13 g/mL(c) 1.1375 g/mL

(d) 1.138 g/mL(E) 1.14 g/mL

43. Express 1,000,000,000,000,000,000,000,000,000 in exponential form.(a) 1 1027(b) 1 1026(C) 1 1027(d) 1 1028(e) none of the above

44. Express 10,000,000,000,000,000,000,000 in exponential form.(a) 1 1022(b) 1 1021(c) 1 1021(D) 1 1022(e) none of the above

45. Express 100,000,000,000,000,000,000 in exponential form.

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(a) 1 1020(b) 1 1018(c) 1 1018(D) 1 1020(e) none of the above

46. Express 0.000 000 000 000 1 in exponential form.(A) 1 1013(b) 1 1012(c) 1 101(d) 1 1013(e) none of the above

47. Express 0.000 000 000 000 01 in exponential form.

(a) 1 1015(B) 1 1014(c) 1 101(d) 1 1014(e) none of the above

48. Express 0.000 000 000 000 001 in exponential form.(a) 1 1016(B) 1 1015(c) 1 101

(d) 1

1015


49. Express the exponential number 5.15 105as an ordinary number.(a) 0.000 515(b) 0.000 051 5(c) 51,500(D) 515,000(e) none of the above

50. Express the exponential number 1.11 104as an ordinary number.(a) 0.000 111(b) 0.000 011 1(C) 11,100(d) 111,000(e) none of the above

51. Express the exponential number 6.26 103as an ordinary number.

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(C) 2.69 1020(d) 269 1018(e) 269 1019

57. One liter of argon gas contains 26,900,000,000,000,000,000,000 atoms at standard

conditions. Express this number of atoms in scientific notation.(a) 2.69 1020(b) 2.69 1021(C) 2.69 1022(d) 26.9 1021(e) 26.9 1022

58. One gram of carbon contains 50,200,000,000,000,000,000,000 atoms. Express thisnumber of carbon atoms in scientific notation.

(a) 5.02 1021(B) 5.02 1022

(c) 5.02 1023(d) 50.2 1021(e) 50.2 1022

59. One gram of silver contains 5,580,000,000,000,000,000,000 atoms. Express thisnumber of silver atoms in scientific notation.

(a) 5.58 1020(B) 5.58 1021(c) 5.58 1022(d) 55.8 1020(e) 55.8 1021

60. One gram of gold contains 3,060,000,000,000,000,000,000 atoms. Express thisnumber of gold atoms in scientific notation.

(a) 3.06 1020(B) 3.06 1021(c) 3.06 1022(d) 30.6 1020(e) 30.6 1021

61. A carbon atom has a mass of 0.000 000 000 000 000 000 000 199 g. Express the mass

in scientific notation.(a) 1.99 1022g(b) 1.99 1021g(c) 1.99 1021g(D) 1.99 1022g(e) 1.99 1023g

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62. An aluminum atom has a mass of 0.000 000 000 000 000 000 000 448 g. Express themass in scientific notation.

(a) 4.48 1022g(b) 4.48 1021g(c) 4.48 1021g

(D) 4.48 1022g(e) 4.48 1023g

63. An iron atom has a mass of 0.000 000 000 000 000 000 000 928 g. Express the mass inscientific notation.

(a) 9.28 1022g(b) 9.28 1021g(c) 9.28 1021g(D) 9.28 1022g(e) 9.28 1023g

64. The radius of a carbon atom is 0.000 000 000 077 meter. Express the atomic radius inscientific notation.(A) 7.7 1011m(b) 7.7 1010m(c) 7.7 109m(d) 7.7 109m(e) 7.7 1010m

65. The radius of a sodium atom is 0.000 000 000 186 meter. Express the atomic radiusin scientific notation.

(a) 1.86 1011m

(B) 1.86 1010m(c) 1.86 109m(d) 1.86 109m(e) 1.86 1010m

66. The radius of a lead atom is 0.000 000 000 175 meter. Express the atomic radius inscientific notation.

(a) 1.75 1011m(B) 1.75 1010m(c) 1.75 109m

(d) 1.75 109m(e) 1.75 1010m

67. The radius of an oxygen atom is 0.000 000 066 centimeter. Express the atomic radiusin scientific notation.

(a) 6.6 109cm(B) 6.6 108cm(c) 6.6 107cm

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(d) 6.6 108cm(e) 6.6 109cm

68. The radius of a chlorine atom is 0.000 000 099 centimeter. Express the atomic radiusin scientific notation.

(A) 9.9 108cm(b) 9.9 107cm(c) 9.9 106cm(d) 9.9 107cm(e) 9.9 108cm

69. The radius of a sulfur atom is 0.000 000 104 centimeter. Express the atomic radius inscientific notation.

(a) 1.04 108cm(B) 1.04 107cm(c) 1.04 106cm(d) 1.04 106cm(e) 1.04 107cm

70. Which of the following unit (conversion) factors is derived from: 1 mile = 5280feet?

(a) 1 mile/1 foot(B) 1 mile/5280 feet(c) 1 foot/5280 miles(d) 5280 miles/1 foot(e) 5280 miles/5280 feet

71. Which of the following unit factors is derived from: 1 mile = 1760 yards?(a) 1 mile /1 yard(B) 1 mile /1760 yards(c) 1 yard/1760 miles(d) 1760 miles/1 yard(e) 1760 miles/1760 yards

72. Which of the following unit factors is derived from: 1 rod = 16.5 feet?(a) 1 rod/1 foot(B) 1 rod/16.5 feet

(c) 1 foot/16.5 rods(d) 16.5 rods/1 foot(e) 16.5 rods/16.5 feet

73. Which of the following unit factors is derived from: 1 ounce = 28.3 grams?(a) 1 ounce/1 gram(b) 1 gram/28.3 ounces

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(C) 28.3 grams/1 ounce(d) 28.3 ounces/1 gram(e) 28.3 ounces/28.3 grams

74. Which of the following unit factors is derived from: 1 gram = 15.4 grains?

(a) 1 gram/1 grain(b) 1 grain/15.4 grams(C) 15.4 grains/1 gram(d) 15.4 grams/1 grain(e) 15.4 grams/15.4 grains

75. Which of the following unit factors is derived from: 1 carat = 0.200 gram?(a) 1 carat/1 gram(b) 1 gram/0.200 carat(C) 0.200 gram/1 carat

(d) 0.200 carat/1 gram(e) 0.200 carat/0.200 gram

76. Which of the following unit factors is derived from the relationship that one gallonis equivalent to 4 quarts?

(a) 1 gallon/1 quart(b) 4 gallons/4 quarts

(c) 4 gallons/1 quart(D) 4 quarts/1 gallon(e) 1 quart/4 gallons

77. Which of the following unit factors is derived from the relationship that one quart isequivalent to 2 pints?

(a) 1 quart/1 pint(b) 2 quarts/2 pints(c) 2 quarts/1 pint(D) 2 pints/1 quart(e) 1 pint/2 quarts

78. Which of the following unit factors is derived from the relationship that one bushelis equivalent to 32 quarts?

(a) 1 bushel/1 quart(b) 32 bushels/32 quarts(c) 32 bushels/1 quart(D) 32 quarts/1 bushel

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(e) 1 quart/32 bushels

79. Which of the following unit factors is derived from the relationship of minutes andhours?

(a) 1 hour/1 minute

(b) 1 minute/60 hours(c) 60 hours/1 minute(d) 60 hours/60 minutes(E) 1 hour/60 minutes

80. Which of the following unit factors is derived from the relationship of hours anddays?

(a) 1 day/1 hour(b) 1 hour/24 days(c) 24 days/1 hour(d) 24 days/24 hours(E) 1 day/24 hours

81. Which of the following unit factors is derived from the relationship of days andyears?

(a) 1 year/1 day(b) 1 day/365 years(c) 365 years/1 day(d) 365 years/365 days(E) 1 year/365 days

82. What is thefirst stepin the unit analysis method of problem solving?(A) Write down the unit asked for in the answer.(b) Write down the given value related to the answer.(c) Apply a unit factor to convert a unit in the given value.(d) Round off the answer in the calculator display.(e) none of the above

83. What is the second stepin the unit analysis method of problem solving?(a) Write down the unit asked for in the answer.(B) Write down the given value related to the answer.

(c) Apply a unit factor to convert a unit in the given value.(d) Round off the answer in the calculator display.(e) none of the above

84. What is the third stepin the unit analysis method of problem solving?(a) Write down the unit asked for in the answer.(b) Write down the given value related to the answer.(C) Apply a unit factor to convert a unit in the given value.

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(d) Round off the answer in the calculator display.(e) none of the above

85. If a marathon race is 26.2 miles, what is the distance in yards?(Given: 1 mile = 1760 yards)

(a) 0.0149 yards(b) 67.2 yards(c) 46,000 yards(D) 46,100 yards(e) 46,110 yards

86. If a marathon race is 26.2 miles, what is the distance in feet?(Given: 1 mile = 5280 feet)

(a) 0.00496 feet(b) 202 feet

(C) 138,000 feet(d) 138,336 feet(e) 140,000 feet

87. If a marathon race is 26.2 miles, what is the distance in kilometers?(Given: 1 mile = 1.61 kilometer)

(a) 0.0615 kilometer(b) 16.3 kilometers(C) 42.2 kilometers(d) 61.5 kilometers

(e) 42,200 kilometers88. If a 10K race is 10.0 kilometers (1.00 104meters), what is the distance in yards?(Given: 1 meter = 1.09 yards)

(a) 0.000 109 yard(b) 9170 yards(c) 10,000 yards(D) 10,900 yards(e) 109,000 yards

89. If a ship travels 26.0 nautical miles, what is the distance in yards?(Given: 1 nautical mile = 2235 yards)

(a) 0.0116 yards(b) 26.0 yards(c) 86.0 yards(d) 2235 yards(E) 58,100 yards

90. If a muscle tissue sample is 125 microns thick, what is the thickness in inches?

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(Given: 1 micron = 3.94 105inch)(a) 3.15 107inch(b) 3.15 106inch(c) 4.93 102inch(D) 4.93 103inch

(e) 3.17 107inches

91. If a diamond weighs 1.33 carats, what is the mass in grams?(Given: 1 carat = 0.200 gram)

(a) 0.133 grams(b) 0.150 grams(c) 0.200 grams(D) 0.266 grams(e) 6.65 grams

92. If a ships cargo is 550,000 pounds, what is the weight in metric tons?(Given: 1 metric ton = 2200 pounds)

(a) 0.0036 metric tons(b) 0.036 metric tons(C) 250 metric tons(d) 2500 metric tons(e) 1.2 109metric tons

93. If the mass of Mars is 6.42 1023kilograms, what is the mass in metric tons?(Given: 1 metric ton = 1000 kilograms)

(a) 1.55 1025metric tons

(b) 1.55 1021metric tons(c) 6.42 1017metric tons(D) 6.42 1020metric tons(e) 6.42 1026metric tons

94. If 842 pounds of Moon samples have been collected from lunar landings, what isthe mass expressed in kilograms? (Given: 1 kilogram = 2.20 pounds)

(a) 309 kilograms(B) 383 kilograms(c) 3830 kilograms(d) 1850 kilograms

(e) 11,100 kilograms

95. If the Moon is 246,000 miles from Earth, what is the distance in kilometers?(Given: 1 mile = 1.61 kilometer )

(a) 0.000 006 54 kilometer(b) 15,300 kilometers(c) 153,000 kilometers(D) 396,000 kilometers

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(e) 3,960,000 kilometers

96. If Earth is 93,000,000 miles from the Sun, what is the distance in kilometers?(Given: 1 kilometer = 0.619 mile)

(a) 0.000 000 006 66 kilometer

(b) 57,600 kilometers(c) 57,600,000 kilometers(D) 150,000,000 kilometers(e) 150,000,000,000 kilometers

97. If an auto gas tank holds 17.4 gallons, what is the volume in liters?(Given: 1 gallon = 3.785 liters)

(a) 0.218 liters(b) 3.785 liters(c) 4.60 liters(d) 17.4 liters(E) 65.9 liters

98. If a patient is injected with 0.500 liter of IV saline, what is the volume in quarts?(Given: 1 quart = 0.946 liters)

(a) 0.473 quarts(b) 0.500 quarts(C) 0.529 quarts(d) 0.946 quarts(e) 1.89 quarts

99. If a patient is injected with 375 milliliters of IV glucose, what is the volume in fluidounces? (Given: 1 fluid ounce = 29.6 milliliters)

(a) 0.0789 fluid ounces(B) 12.7 fluid ounces(c) 29.6 fluid ounces(d) 375 fluid ounces(e) 11,100 fluid ounces

100. How many minutes does it take an athlete to run a 10K race that is 6.19 miles?(Assume the athletes pace is 6.50 minutes per mile. )

(a) 0.952 minute(b) 1.05 minutes(C) 40.2 minutes(d) 65.0 minutes(e) 402 minutes

101. How many minutes does it take an athlete to run a 20K race that is 12.4 miles?(Assume the athletes pace is 7.50 minutes per mile. )

(a) 0.605 minute

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(b) 1.65 minutes(C) 93.0 minutes(d) 150 minutes(e) 1860 minutes

102. How many minutes is required for sunlight to travel from the Sun to Earth?(Assume the Sun is 93,000,000miles from Earth and that sunlight travels at1.86 105miles per second.)

(a) 0.0020 minute(b) 2.0 minutes(C) 8.3 minutes(d) 500 minutes(e) 830 minutes

103. A sample of rose gold is: 12.0 grams gold, 5.0 grams silver, and 7.0 grams copper

by mass. What is the percent of copper in the sample?(a) 12%(B) 29%(c) 50%(d) 58%(e) 75%

104. A sample of white gold is: 18.0 grams gold, 3.0 grams silver, 2.0 grams cobalt, and1.0 gram platinum by mass. What is the percent of platinum in the sample?

(A) 4.2%(b) 8.3%(c) 13%(d) 25%(e) 75%

105. A sample of lime gold is: 14.0 grams gold, 7.0 grams silver, and 3.0 grams copperby mass. What is the percent of copper in the sample?

(a) 3.0%(B) 13%(c) 29%(d) 58%

(e) 67%

106. A sample of 18K gold contains the following by mass: 18.0 grams gold, 3.0 gramssilver, and 3.0 grams copper. What is the percent of gold?

(a) 6.0%(b) 18%(c) 25%

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(d) 33%(E) 75%

107. A sample of 10K gold contains the following by mass: 10.0 grams gold, 4.0 gramssilver, 5.0 grams copper, and 5.0 grams nickel. What is the percent of gold?

(a) 10%(b) 14%(C) 42%(d) 58%(e) 71%

108. A sample of 22K gold contains the following by mass: 22 grams gold, 1 gram silver,and 1 gram copper. What is the percent of gold?

(a) 1.0%(b) 4.5%(c) 9.1%(D) 92%(e) 96%

109. Sterling silver contains 925 parts silver and 75 parts copper by mass. What is thepercent of silver in sterling silver?

(a) 7.50%(b) 8.11%(c) 12.3%(D) 92.5%(e) 100%

110. Sterling silver contains 925 parts silver and 75 parts copper by mass. What is thepercent of copper in sterling silver?

(A) 7.5%(b) 8.1%(c) 12%(d) 93%(e) 100%

111. If a penny has a mass of 3.015 g and is 95.0% copper, what is the mass of copper inthe coin?

(a) 0.151 g(b) 0.286 g(c) 0.603 g(d) 1.51 g(E) 2.86 g

112. If a penny has a mass of 3.015 g and is 5.00% zinc, what is the mass of zinc in thecoin?

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(A) 0.151 g(b) 0.286 g(c) 0.603 g(d) 1.51 g(e) 2.86 g

113. If a penny has a mass of 2.507 g and is 97.5% zinc, what is the mass of zinc in thecoin?

(a) 0.0627 g(b) 0.244 g(c) 0.627 g(d) 2.38 g(E) 2.44 g

114. If a penny has a mass of 2.507 g and is 2.5% copper, what is the mass of copper in

the coin?(A) 0.063 g(b) 0.24 g(c) 0.63 g(d) 2.4 g(e) 6.3 g

115. If a 5 coin has a mass of 5.07 g and is 75.0% copper, what is the mass of copper inthe 5 coin?

(a) 0.203 g

(b) 0.676 g(c) 1.27 g(d) 1.69 g(E) 3.80 g

116. If a 5 coin has a mass of 5.07 g and is 25.0% nickel, what is the mass of nickel in the5 coin?

(a) 0.203 g(b) 0.676 g(C) 1.27 g(d) 1.69 g

(e) 3.80 g

117. If a 5 coin has a mass of 5.07 g and is 75.0% copper, what is the mass of nickel inthe 5 coin?

(a) 0.203 g(b) 0.676 g(C) 1.27 g

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(d) 1.69 g(e) 3.80 g

118. Stainless steel is composed of iron, manganese, chromium, and nickel. If a 2.00 gsample was analyzed and found to contain 2.75% manganese, what is the mass of

manganese in the sample?(a) 0.0138 g(B) 0.0550 g(c) 0.182 g(d) 0.727 g(e) 1.38 g

119. Cinnabar is a naturally occurring mineral containing mercury and sulfur. A 3.33 gsample of cinnabar was analyzed and found to contain 6.55% mercury.What is the mass of mercury in the sample?

(a) 0.0197 g(B) 0.218 g(c) 0.508 g(d) 1.97 g(e) 21.8 g

120. Sterling silver is composed of 92.5% silver and 7.5% copper. If a sterling silver ringwas found to contain 6.55 g of silver, what is the mass of the ring?

(a) 0.0708 g(b) 0.491 g

(c) 6.06 g(D) 7.08 g(e) 87.3 g

121. A ruby gemstone contains 52.7% aluminum, 47.1% oxygen, and small traces ofchromium. If the ruby was found to contain 0.125 g of aluminum, what is the massof the gemstone?

(a) 0.0659 g(b) 0.125 g(C) 0.237 g(d) 0.265 g(e) 0.625 g

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122. A sapphire gemstone contains 52.7% aluminum, 47.1% oxygen, and traces of ironand titanium. If the sapphire was found to contain 0.155 g of oxygen, what is themass of the gemstone?

(a) 0.0730 g(b) 0.155 g

(c) 0.294 g(D) 0.329 g(e) 0.775 g

123. A standard sheet of paper measures 8.50 inches by 11.0 inches. What is the surfacearea of the paper?

(a) 93 in.2(b) 94 in.2(c) 93.5 in.2

(D) 94.0 in.2


124. What is the average speed in feet per second of a world-class swimmer whoswims a 400.0-m freestyle race in 3 min, 49.05 s? (Given: 1 m = 3.281 ft.)

(a) 0.5323 ft/s(b) 1.746 ft/s(C) 5.730 ft/s(d) 114.6 ft/s(e) 376.0 ft/s

125. Calculate the volume of Earth assuming it is spherical and has a radius (r) of

6370 km. The volume of a sphere equals 4r3/3, where is the constant 3.14.(a) 2.58 1011km3(b) 3.45 1011km3(c) 6.37 1011km3(d) 1.03 1012km3(E) 1.08 1012km3

126. Add 5.0 104to 2.0 103and express the answer in scientific notation.

(a) 1.0 103(b) 2.5 103(c) 2.5 104(d) 5.2 103(E) 5.2 104

127. Add 2.4 103to 3.7 102and express the answer in scientific notation.

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(A) 3.9 102(b) 3.9 103(c) 3.9 104(d) 3.9 102(e) 3.9 103

128. Add 2.33 103to 4.16 102and express the answer in scientific notation.(a) 2.75 102(B) 2.75 103(c) 27.5 102(d) 4.39 102(e) 4.39 103

129. Subtract 9.0 103from 2.0 104and express the answer in scientific notation.(a) 1.1 101

(b) 1.1 102(c) 1.1 103(D) 1.1 104(e) 1.1 105

130. Subtract 6.7 103from 6.6 102and express the answer in scientific notation.(a) 5.9 101(B) 5.9 102(c) 5.9 103(d) 5.9 101

(e) 5.9

102

131. Subtract 2.39 102from 4.16 103and express the answer in scientific notation.(a) 3.92 102(B) 3.92 103(c) 3.92 104(d) 4.40 102(e) 4.40 103

132. Multiply 2.2 104times 5.1 106and express the answer in scientific notation.(A) 1.1 101(b) 1.1 102(c) 1.1 103(d) 1.1 1010(e) 1.1 1024

133. Multiply 6.4 103times 8.0 107and express the answer in scientific notation.(a) 5.1 1021

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(b) 5.1 103(c) 5.1 103(d) 5.1 104(E) 5.1 105

134. Multiply 7.99 105times 5.66 107and express the answer in scientific notation.(a) 4.52 1034(b) 4.52 1013(c) 4.52 1012(D) 4.52 1011(e) 4.52 1035

135. Divide 2 106by 5 102and express the answer in scientific notation.(a) 4 103(b) 4 106

(C) 4 107(d) 4 102(e) 4 104

136. Divide 3.8 101by 5.0 102and express the answer in scientific notation.(a) 7.6 101(b) 7.6 103(c) 7.6 103(D) 7.6 104(e) 7.6 105

137. Divide 6.41 103by 8.04 107and express the answer in scientific notation.(a) 7.97 1012(B) 7.97 1011(c) 7.97 1010(d) 7.97 105(e) 7.97 103

138. Round off the following measurement to three significant digits: 14,546 cm.(a) 145 cm(b) 146 cm(C) 14,500 cm(d) 14,600 cm(e) 15,000 cm

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139. Round off the following measurement to three significant digits: 0.004 460 L.(a) 0.460 L(b) 0.044 6 L(C) 0.004 46 L(d) 0.004 460 L

(e) 0.044 60 L

140. In performing a multistep multiplication or division calculation, when should youround off the answer in the calculator display?

(a) after each step in the calculation(b) after the first unit factor(c) after the second unit factor(D) after the final calculation(e) none of the above

141. How many significant digits are justified by the unit equation 1 yard = 3 feet?(a) 1(b) 2(c) 3(D) infinite(e) impossible to determine

142. The radius of a potassium atom is 2.27 1010meter. Express the radius of the atomin numerical form.

(a) 0.000 000 000 022 7 m

(B

) 0.000 000 000 227 m(c) 0.000 000 002 27 m(d) 0.000 000 022 7 m(e) 22,700,000,000 m

143. How many minutes is required for sunlight to travel from the Sun to Mars?(Assume the Sun is 2.28 108kilometers from Mars and that sunlight travels at2.99 105kilometers per second.)

(a) 0.00131 minutes(b) 0.0787 minutes(C) 12.7 minutes

(d) 763 minutes(e) 45,800 minutes

Exam 1 Practice chemistry

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