Final Exam Study Guide 1.Which of the following is a possible order of events for the Scientific Method. A. Observations Hypothesis Experiments Hypothesis Experiments B. Hypothesis Experiments Observations Theory Experiments C. Hypothesis Experiments Observations Theory Observations D. Observations Hypothesis Theory Hypothesis Experiments E. Theory Experiments Hypothesis Observations Experiments 2.A person with heatstroke has a temperature of 106 F. What does this read in Kelvin? A. 314K Formula: Tk = Tc +273 B. 41K Tf =1.8(Tc) +32˚ C. -232 K D. 223K E. 496K 3. Which of the following statements are consistent w/ Rutherford’s nuclear theory A. The proton is in the nucleus with neutral charge B. The nucleus is roughly 25% of the atom’s volume C. The electron is a very small mass with positive charge D. The proton contains all of the atom’s mass and very little volume E. The proton contains all of the atom’s mass, and all of the atom’s volume 4. Which of the following gives the correct numbers of protons, neutrons, and electrons in a natural atom of 118 sn A. 118 protons, 50 neurons, 118 electrons 118 50 Sn B. 118 protons, 118 neutrons, 50 electrons C. 50 protons, 68 neutrons, 50 electrons D. 68 protons, 68 neutrons, 50 electrons E. 50 protons, 50 neutrons, 50 electrons 5. Americium is best described as a _______. 106 F = 1.8(TC)+32 -32 -32 74 = 1.8(TC) TC=41.1 +273
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Final Exam Study Guide
1. Which of the following is a possible order of events for the Scientific Method.A. Observations Hypothesis Experiments Hypothesis Experiments B. Hypothesis Experiments Observations Theory Experiments C. Hypothesis Experiments Observations Theory Observations D. Observations Hypothesis Theory Hypothesis Experiments E. Theory Experiments Hypothesis Observations Experiments 2. A person with heatstroke has a temperature of 106 F. What does this read in Kelvin?A. 314K Formula: Tk = Tc +273106 F = 1.8(TC)+32-32 -32
74 = 1.8(TC)TC=41.1 +273
1.8 1.8TC= 314K
B. 41K Tf =1.8(Tc) +32C. -232 KD. 223K E. 496K
3. Which of the following statements are consistent w/ Rutherfords nuclear theoryA. The proton is in the nucleus with neutral charge B. The nucleus is roughly 25% of the atoms volume C. The electron is a very small mass with positive charge D. The proton contains all of the atoms mass and very little volume E. The proton contains all of the atoms mass, and all of the atoms volume 4. Which of the following gives the correct numbers of protons, neutrons, and electrons in a natural atom of A. 118 protons, 50 neurons, 118 electrons B. 118 protons, 118 neutrons, 50 electrons C. 50 protons, 68 neutrons, 50 electrons D. 68 protons, 68 neutrons, 50 electrons E. 50 protons, 50 neutrons, 50 electrons 5. Americium is best described as a _______.A. transition metal B. halide C. alkali metal D. inner transition metal E. alkali earth metal6. Which element would have the most similar physical and chemical properties to Chlorine?A. Kr B. Br C. Se D. O E. Ne F. 7. How many sulfur atoms are there in 5.52 mol of sulfur?A. 32.2 x 10^23Formula: Given atoms = ?B. 3.32 x 10^24C. 6.02 x 10^23D. 9.17 x 10^-24E. 91.7 x 10^-258. The formula for Sulfur Dichloride is ________.A. S2Cl2 (Disulfur Dichloride)B. S2ClC. S2Cl4 (Disulfur Tetrachloride)D. SClE. SCl2 (Sulfur DiChloride)
9. The formula for a compound formed between calcium and sulfate ions is which of these?A. CaSO4 (Calcium Sulfate)B. CaSO3 (Calcium Sulfite)C. (Ca)2SO4D. Ca(SO4)2E. CA2(SO4)2
10. Succinic acid, is 40.7% C, 5.12% H, and 54.2% O. The molar mass of succinic acid is about 118g/mol. What is the molecular formula of succinic acid?A. C3H2O5C: Molar Mass (given) %C = _____ xB. C4H6O4C. C5H10O3H: Molar Mass (given) %H= _____ xD. C6H14O2 E. C7H18OO: Molar Mass (given) % O= _____ x 11. Predict the balanced equation of this reaction:#K3PO4 +#Ca(NO2)2 -> #Ca3(PO4)2 +#KNO2A. K3PO4 +Ca(NO2)2 -> Ca3(PO4)2 +KNO2B. K3PO4 +Ca(NO2)2 -> Ca3(PO4)2 +3KNO2C. 2K3PO4 +Ca(NO2)2 -> Ca3(PO4)2 +6KNO2D. 2K3PO4 +3Ca(NO2)2 -> Ca3(PO4)2 +6KNO2E. K3PO4 +Ca(NO2)2 -> Ca3(PO4)2 +KNO2
12. Calculate the molarity of a solution of 0.500 moles of NaCl in a 0.200 L solutionA. 2.50 M Molarity = Molarity= = 2.50 MB. 146M C. 4.00 M D. 0.400 M E. 0.250 M
13. Which of the following is the precipitate in this reaction? 3 SrCl2 (?) + 2 Li3PO4 (?) -> Sr3(PO4)2 (?) + 6 LiCl (?)A. SrCl2B. LI3PO4C. Sr3(PO4)2D. LiCl
14. Which of the following describes a reduction?A. Loss of electronsB. Increase in oxidation stateC. Fe2+-> Fe3+D. Gain of oxygenE. Gain of electrons
15. In the following reaction, identify the oxidizing agent.Sn2+ (aq) + 2Fe3+ (aq) -> Sn^4+ (aq) + 2Fe^2+ (aq)A. Sn^2+ (Reduction - Gain electrons)B. Fe^3+ (Oxidized -Loss electrons)C. Sn4+D. Fe2+
16. The pressure in Denver is 632.5 mmHg. Convert this pressure into psi.a. 10.76 psi = 556.3 mmHg
b. 706.6 psi = 36531.7 mmHgc. 5.661 x 102 psi = 2.88 mmHgd. 12.23 psi = 632.3 mmHge. 3.270 x 104 psi = 1690612.245 mmHg
17. A balloon contains 0.158 mol of gas and has a volume of 2.46 L. If an additional of 0.113 mol gas is added to the balloon (at the same temperature and pressure), what is its final volume?Given: V1 = 2.46N1 =0.158n =0.113
Find: V2
a. 4.22 LEq: V2=
2.46 L x = 4.21937 L = 4.22 L
b. 1.76 Lc. 1.41 Ld. 8.91 Le. 0.701 L
18. What is the pressure in a 10.0 L cylinder filled with 0.448 mol of nitrogen gas at a temperature of 315 K?Eq: PV=nRT P=
P= = 1.16 atmGiven : V= 10.0Ln= 0.448 molT= 315 K
Find: P
a. 11.6 atmb. 0.806 atmc. 0.154 atmd. 2.32 atme. 1.16 atm
19. 5. A weather balloon is inflated to a volume of 28.5 L at a pressure of 748 mmHg and a temperature of 28.0 C. The balloon rises in the atmosphere to an altitude of approximately 25,000 feet, where the pressure is 385 mmHg and the temperature is -15.0 C. Assuming the balloon can freely expand, calculate the volume of the balloon at this altitude.Eq:
K= C +273 T1 =28.0 C+273= 301 kT2=-15.0 C +273 =258 K
28.5 LGiven: P1= 748 mmHgV1= 28.5 LT1= 28.0 CP2= 385 mmHgT2=-15.0 C
a. 47.5 Lb. 29.7 Lc. 47.4 Ld. 48.2 Le. 27.5 L
20. The curve shows the distribution of molecular velocities for the five different gases: H2, HCl, N2, Cl2, SO2. What is the identity of gas from curve # 3?
a. H2 : 2b. HCl : 36c. N2 : 28d. Cl2 : 70e. SO2 : 64
21. Which gas law supports the following: ______?a. Avagadros Law: Mole & Volume: n V , n V b. Boyles Law: Pressure & Volume: pressure V P , V P c. Charles Law: Temperature & Volume: T V , T V d. Daltons Law: Ptot = P1 +P2 +P3e. Einsteins Law
22. Given the following specific heat capacitances (Cs), 49.6g of which of the following would rise by 9.40 C if it absorbed 1.95 kJ of energy
a. Lead (CS = 0.128 J/gC) Fastest= 4.18 J/g
b. Silver (CS = 0.235 J/gC)c. Iron (CS = 0.449 J/gC)d. Water (CS = 4.18 J/gC) Sloweste. Sand (CS = 0.840 J/gC)
23. Calculate rxn for the following reaction.CaO(s) + CO2(g) CaO3(s)Use the following reactions HsCa (s) + CO2 (g) + O2 (g) CaCO3 (s), H1 = -812.8 kJ2 Ca (s) + O2 (g) 2 CaO (g), H2 = -1269.8 kJ
a. -177.9 kJ b. -355.8 kJ c. 457.0 kJ d. 177.9 kJ e. -457.0 kJ
24. Which of the following shows types of EM radiation has the highest energy?
a. Radio wavesb. Microwavesc. Gamma wavesd. Ultraviolet radiatione. XRAY
25. Which set of quantum numbers (n, l,m1) below properly describes an f orbital?a. 4, 3, 2b. 4, 2, -3c. 3, 1, 0d. 3, 0, 1e. 3, 3, -2
26. Which of the following could be an orbital with quantam number, l=2. Correct answer: e.
S orbital S orbital F orbital P Orbital D orbital
27. What is the full electron configuration of atom, Germanium (Ge)a. 1s22s22p63s23p64s23d104p2b. 1s22s22p63s23p64s24p2c. 1s22s22p63s23p64s24d104p2d. 1s22s22p63s23p64s23d12e. 1s22s22p63s23p64s22d104p2
28. What it the correct orbital diagram of Oxygen?
Correct Answer: C
29. Which element has the quantum number, n=5, and has 6 valence electrons?
a. Po: Quantum number - Valence electrons - 6b. Cs: Quantum number - Valence electrons - 1c. Te: Quantum number - Valence electrons - 6d. C: Quantum number - Valence electrons - 4e. Rn: Quantum number -Valence electrons 8
30. Which of the following elements is the highest 1st Ionization Energy?
a. Cab. Rbc. Fr Largest Atomic Sized. Gee. F Largest Ionization Energy
31. What is the correct Lewis Dot Structure for Sulfur with a 2- charge? Answer: a.
32. What Lewis Dot Structure is Correct? Answer: d.
33. What is the correct Lew Dot Structure for CH3SH (Methanethiol)? Answer: e.
34. Correct answer: e.
35. What Lewis dot structure for HCN is correct? Answer: e.
36. What is the formal charge of N?a. -2 b. -1 c. 0 d. +1 e. +2
37. How many Resonance structures does SO3 have?
a. 0 b. 1c. 2 d. 3e. 4
38. What is the correct Lewis Dot Structure for SF4 (Sulfur Tetrafluoride)?Correct Answer: b.39. a. 1 single bond, 3 lone pairsb. 2 single bonds, 2 lone pairs (Bent)c. 3 single bonds, 1 lone pair (Trigonal pyramidal)d. 1 triple bond, 1 lone paire. 4 single bonds (Tetrahedral)
40. Resonance Structure
Correct Answer: d.41.
Trig Bypyr Bent Trig Pyr See-Saw Sq. Planar42. Given the bond angle of ______, what is the shape?a. Linear (180)b. Bent (120)c. Trigonal Planar (120)d. Tetrahedral (109.5)e. Octahedral (90)
43. a. Trigonal Pyramidalb. See-sawc. Trigonal Pyramidald. T-Shapede. Trigonal Planar
44. Which molecular formula is Nonpolar?a. BrH ( Polar)b. CH4 (Nonpolar)c. NH3 (Polar)d. H2O (Polar)e. CH2O (Polar)
45. ___ Lone pair of central atomsa. Square Planar (2)b. Trigonal Pyramidal (1)c. Tetrahedral (0)d. Bent (1,2)e. T-Shaped (2)
46. Vitamin Ca. #1b. #2 (Sp3)c. #3 (Sp2)d. #4 (Sp3)e. #5 (Sp3)
47. Sigma Spd*48. a. H22-b. NE2c. He22+d. F22-e. LI22-49. Molecular Orbital O22-a. 0b. 1c. 2d. 3e. 4
50. How many bonds exist in this beta-carotene structure? a. 6b. 11c. 2d. 41e. 10
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