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Chapters 19 Chapters 12 Chapter 15/16Chapter 13/14Chapters 25

Which compound can act as both a Bronsted-Lowry acid and a Bronsted-Lowry base?

a. water c. sodium hydroxideb. ammonia d. hydrochloric acid

a. water

In the reaction CO32- + H2O

the carbonate ion is acting as a(n) ___.

HCO3- + OH-

a. Arrhenius base c. Bronsted-Lowry baseb. Arrhenius acid d. Bronsted-Lowry acid

c. Bronsted-Lowry base

Which reaction illustrates amphoterism?

a. H2O + H2O → H3O+ + OH– c. NaCl → Na+ + Cl–b. HCI + H2O → H3O+ + Cl– d. NaOH → Na+ + OH–

a. H2O + H2O → H3O+ + OH–

What are the acids in the following equilibrium

reaction? CN- + H2O HCN + OH-

a. CN- , H2O c. CN- , OH-

b. H2O , HCN d. H2O, OH-

b. H2O , HCN

Which of the following represents a Bronsted-Lowry conjugate acid-base pair?

a. SO32- and SO2 c. H3O and H2

b. CO32- and CO d. NH4

+ and NH3

d. NH4+ and NH3

Which symbol is used for an alpha particle?

24He

Which of the following materials is necessary to stop an alpha particle?

a. three feet of concrete c. single sheet of aluminum foilb. three inches of lead d. single sheet of paper

d. single sheet of paper

Which of the following materials is necessary to stop a beta particle?

a. three feet of concrete c. thin pieces of woodb. three inches of lead d. single sheet of paper

c. thin pieces of wood

Which of the following materials is most effective for stopping gamma radiation?

a. several cm of lead c. single sheet of aluminum foilb. on cm of water d. single sheet of paper

a. several cm of lead

The equation below shows the decomposition of lead nitrate. How many grams of oxygen are produced when 11.5 g NO2 is formed?

2.00 g

. When glucose is consumed, it reacts with oxygen in the body to produce carbon dioxide, water, and energy. How many grams of carbon dioxide would be produced if 45 g of C6H12O6 completely reacted with oxygen?

C6H12O6 + 6O2>> 6CO2 + 6H2O

a. 1.5 g c. 11 gb. 1.8 g d. 66 g

d. 66 g

45 g of C6H12O6 1 mol of C6H12O6 6 mol of CO2 44 g of CO2 = 66 g CO2

180 g of C6H12O6 1 mol of C6H12O6 1 mol of CO2

How many liters of hydrogen gas are needed to react with CS2 to produce 2.50 L of CH4 at STP? 4H2 (g) + CS2 (l)

CH4 (g) + 2H2S(g)

a. 2.50 L c. 7.50 Lb. 5.00 L d. 10.0 L

2.50 L of CH4 1 mol of CH4 4 mol of H2 22.4 L of H2 = 10.0 L22.4 L of CH4 1 mol of CH4 1 mol of H2

d. 10.0 L

Glucose, C6H12O6 , is a good source of food energy. When it reacts with oxygen, carbon dioxide and water are formed. How many liters of CO2 are produced when 126 g of glucose completely react with oxygen? C6H12O6 (s) + 6O2 (g) 6CO2(g)+ 6H2O(l) + 673 kcal

a. 4.21 L c. 15.7 Lb. 5.33 L d. 94.1 L

d. 94.1 L

126 g of C6H12O6 1 mol of C6H12O6 6 mol of CO2 22.4 L of CO2= 94.1 L180 g of C6H12O6 1 mol of C6H12O6 1 mol of CO2

When two substances react to form products, the reactant which is used up is called the __.

a. determining reagent c. excess reagentb. limiting reagent d. catalytic reagent

b. limiting reagent

What causes water’s low vapor pressure?

a. Dispersion forces c. hydrogen bondingb. Covalent bonding d. ionic attractions

c. hydrogen bonding

The fact that ice is less dense than water is related to the fact that ___.

a. The molecular structure of ice is much less orderly than that of waterb. The molecules of ice are held to each other by covalent bondingc. Ice has a molecular structure in which water molecules are arranged randomlyd. Ice has a molecular structure that is an open framework held together by hydrogen bonds

d. Ice has a molecular structure that is an open framework held together by hydrogen bonds

. Which of these would you expect to be soluble in the nonpolar solvent carbon disulfide?

a. Water c. NaClb. Carbon tetraiodide d. Stannous iodide

b. Carbon tetraiodide

What type of compound is always an electrolyte?

a. Polar covalent c. ionicb. Nonpolar covalent d. network solid

c. ionic

Which symbol is used to connect the formula of the compound with the number of water molecules in a hydrate?

a. A parenthesis c. a multiplication symbolb. An asterisk d. a dot

d. a dot

Which law can be used to calculate the number of moles of a contained gas?

a. Boyle’s law c. ideal gas lawb. combined gas law d. Charles’s law

c. ideal gas law

A box with a volume of 22.4 L contains 1.0 mol of nitrogen and 2.0 mol of hydrogen at 0˙C. Which of the following statements is true?

a. the total pressure in the box is 101kPab. the partial pressures of N2 and H2 are equal.c. the total pressure is 202 kPa.d. the partial pressure of N2is 101 kPa.

d. the partial pressure of N2is 101 kPa.

If the volume of a container of air is reduced by one-half, what happens to the partial pressure of oxygen within the container?

a. it is reduced by one-half. C. it is doubledb. it does not change d. it is reduced by one-fourth

C. it is doubled

. Which of the following gases is the best choice for inflating a balloon that must remain inflated for a long period of time?

a. argon c. hydrogenb. oxygen d. neon

c. hydrogen