Question 1

Gases expand to fill the volume and shape of their container because the rapidly moving particles experience negligible attractive forces for each other.

Accepted Answer

A) True 
 B)False

Question 2

Some nail polish removers contain acetone. When acetone evaporates,the covalent bonds between the carbon,hydrogen,and oxygen atoms are broken.

Accepted Answer

A) True 
 B)False

Question 3

Viscosity is a measure of the resistance of a liquid to flow freely.

Accepted Answer

A) True 
 B)False

Question 4

When a sample of gas is compressed from 6.0 L to 2.0 L at a constant temperature,the pressure of the gas triples.

Accepted Answer

A) True 
 B)False

Question 5

NaCl has a higher melting point than sucrose (C12H22O11).

Accepted Answer

A) True 
 B)False

Question 6

The normal boiling point of a liquid is the temperature at which its vapor pressure equals which of the following?

Accepted Answer

A) 1 mm Hg 
B) 760 mm Hg 
C) The pressure above the liquid 
D) The vapor pressure of water 
A) 1 mm Hg 
B) 760 mm Hg 
C) The pressure above the liquid 
D) The vapor pressure of water

Question 7

A scuba diver typically begins a dive with a compressed air tank at 2,350 psi. What is this pressure expressed in units of mm Hg?

Accepted Answer

A) 160. mm Hg 
B) 3.09 mm Hg 
C) 1.21 × 105 mm Hg 
D) 1.79 × 106 mm Hg 
E) 45.5 mm Hg 
A) 160. mm Hg 
B) 3.09 mm Hg 
C) 1.21 × 105 mm Hg 
D) 1.79 × 106 mm Hg 
E) 45.5 mm Hg

Question 8

An aerosol spray can with a volume of 350 mL registers a pressure of 4.5 atm at room temperature. What happens to the pressure of the gas inside the can if the can is stored outside during the winter months?

Accepted Answer

A) The pressure of the gas will remain at 4.5 atm. 
B) The pressure of the gas will be greater than 4.5 atm. 
C) The pressure of the gas will be less than 4.5 atm. 
D) It is impossible to predict without knowing the amount of gas present inside the can. 
A) The pressure of the gas will remain at 4.5 atm. 
B) The pressure of the gas will be greater than 4.5 atm. 
C) The pressure of the gas will be less than 4.5 atm. 
D) It is impossible to predict without knowing the amount of gas present inside the can.

Question 9

Given these vapor pressures at 20 °C: butane,1,650 mm Hg; acetaldehyde,740 mm Hg,Freon-113,284 mm Hg,the compound with the lowest boiling point is ________.

Accepted Answer

The answer of Given these vapor pressures at 20 °C:...

Question 10

Consider the two liquids A and B shown in closed containers. Which liquid exhibits the stronger intermolecular forces?

Accepted Answer

A) Liquid A 
B) Liquid B 
C) Both Liquids A and B have equal vapor pressures. 
D) Not enough information is given. 
A) Liquid A 
B) Liquid B 
C) Both Liquids A and B have equal vapor pressures. 
D) Not enough information is given.

Question 11

Energy is released when a less organized state is converted to a more organized state.

Accepted Answer

A) True 
 B)False

Question 12

A sample of neon gas has a volume of 5.0 mL at a pressure of 1.50 atm. What is the pressure exerted by the gas if the volume is increased to 30.0 mL,at constant temperature?

Accepted Answer

A) 0.25 atm 
B) 9.0 atm 
C) 1.5 atm 
D) 0.21 atm 
E) 7.5 atm 
A) 0.25 atm 
B) 9.0 atm 
C) 1.5 atm 
D) 0.21 atm 
E) 7.5 atm

Question 13

A birthday balloon contains helium at a pressure of 815 torr. What is this pressure expressed in units of mm Hg?

Accepted Answer

A) 815 mm Hg 
B) 1.07 mm Hg 
C) 0.815 mm Hg 
D) 6.19 × 105 mm Hg 
A) 815 mm Hg 
B) 1.07 mm Hg 
C) 0.815 mm Hg 
D) 6.19 × 105 mm Hg

Question 14

If 10.0 g of Ne and 10.0 g of N2 are put into a 5.0 L container,the partial pressure of N2 will be less than the partial pressure of Ne in the container.

Accepted Answer

A) True 
 B)False

Question 15

A scuba diver typically begins a dive with a compressed air tank at 2,350 psi. What is this pressure expressed in units of Pa?

Accepted Answer

A) 0.0232 Pa 
B) 3.09 Pa 
C) 2.38 × 108 Pa 
D) 1.62 × 107 Pa 
E) 45.5 Pa 
A) 0.0232 Pa 
B) 3.09 Pa 
C) 2.38 × 108 Pa 
D) 1.62 × 107 Pa 
E) 45.5 Pa

Question 16

Butane,CH3CH2CH2CH3,has the structure shown below. What is the strongest type of intermolecular force that exists between two butane molecules?

Accepted Answer

A) London dispersion forces 
B) Hydrogen bonding 
C) Temporary dipole interactions 
D) Dipole-dipole interactions 
A) London dispersion forces 
B) Hydrogen bonding 
C) Temporary dipole interactions 
D) Dipole-dipole interactions

Question 17

A scuba diver typically begins a dive with a compressed air tank at 2,350 psi. What is this pressure expressed in units of atmospheres?

Accepted Answer

A) 160. atm 
B) 2.35 atm 
C) 3.45 × 104 atm 
D) 3.09 atm 
E) 45.5 atm 
A) 160. atm 
B) 2.35 atm 
C) 3.45 × 104 atm 
D) 3.09 atm 
E) 45.5 atm

Question 18

Gay-Lussac's law relates the ________ and temperature of a gas sample at constant volume.

Accepted Answer

The answer of Gay-Lussac's law relates the ________ and temperature...

Question 19

A 54.2 L sample of gas at 115 K is heated to 345 K,at constant pressure. What volume does the gas now occupy?

Accepted Answer

A) 2.15 × 106 L 
B) 163 L 
C) 18.1 L 
D) 732 L 
A) 2.15 × 106 L 
B) 163 L 
C) 18.1 L 
D) 732 L

Question 20

Three of the four phase changes below are endothermic. Which phase change is NOT endothermic?

Accepted Answer

A) Vaporization 
B) Sublimation 
C) Condensation 
D) Melting 
A) Vaporization 
B) Sublimation 
C) Condensation 
D) Melting

Exam 7: Gases,liquids,and Solids

Gases expand to fill the volume and shape of their container because the rapidly moving particles experience negligible attractive forces for each other.

Some nail polish removers contain acetone. When acetone evaporates,the covalent bonds between the carbon,hydrogen,and oxygen atoms are broken.

Viscosity is a measure of the resistance of a liquid to flow freely.

When a sample of gas is compressed from 6.0 L to 2.0 L at a constant temperature,the pressure of the gas triples.

NaCl has a higher melting point than sucrose (C12H22O11).

The normal boiling point of a liquid is the temperature at which its vapor pressure equals which of the following?

A scuba diver typically begins a dive with a compressed air tank at 2,350 psi. What is this pressure expressed in units of mm Hg?

An aerosol spray can with a volume of 350 mL registers a pressure of 4.5 atm at room temperature. What happens to the pressure of the gas inside the can if the can is stored outside during the winter months?

Given these vapor pressures at 20 °C: butane,1,650 mm Hg; acetaldehyde,740 mm Hg,Freon-113,284 mm Hg,the compound with the lowest boiling point is ________.

Consider the two liquids A and B shown in closed containers. Which liquid exhibits the stronger intermolecular forces?

Energy is released when a less organized state is converted to a more organized state.

A sample of neon gas has a volume of 5.0 mL at a pressure of 1.50 atm. What is the pressure exerted by the gas if the volume is increased to 30.0 mL,at constant temperature?

A birthday balloon contains helium at a pressure of 815 torr. What is this pressure expressed in units of mm Hg?

If 10.0 g of Ne and 10.0 g of N2 are put into a 5.0 L container,the partial pressure of N2 will be less than the partial pressure of Ne in the container.

A scuba diver typically begins a dive with a compressed air tank at 2,350 psi. What is this pressure expressed in units of Pa?

Butane,CH3CH2CH2CH3,has the structure shown below. What is the strongest type of intermolecular force that exists between two butane molecules?

A scuba diver typically begins a dive with a compressed air tank at 2,350 psi. What is this pressure expressed in units of atmospheres?

Gay-Lussac's law relates the ________ and temperature of a gas sample at constant volume.

A 54.2 L sample of gas at 115 K is heated to 345 K,at constant pressure. What volume does the gas now occupy?

Three of the four phase changes below are endothermic. Which phase change is NOT endothermic?

Matter and Measurement

Atoms and the Periodic Table

Ionic Compounds

Covalent Compounds

Chemical Reactions

Energy Changes,reaction Rates,and Equilibrium

Solutions

Acids and Bases

Nuclear Chemistry

Introduction to Organic Molecules and Functional Groups

Alkanes

Unsaturated Hydrocarbons

Organic Compounds That Contain Oxygen,halogen,or Sulfur

The Three-Dimensional Shape of Molecules

Aldehydes and Ketones

Carboxylic Acids,esters,and Amides

Amines and Neurotransmitters

Lipids

Carbohydrates

Amino Acids,proteins,and Enzymes

Nucleic Acids and Protein Synthesis

Metabolism and Energy Production

Carbohydrate,lipid,and Protein Metabolism

Filters

NaCl has a higher melting point than sucrose (C₁₂H₂₂O₁₁).

If 10.0 g of Ne and 10.0 g of N₂ are put into a 5.0 L container,the partial pressure of N₂will be less than the partial pressure of Ne in the container.

Butane,CH₃CH₂CH₂CH₃,has the structure shown below. What is the strongest type of intermolecular force that exists between two butane molecules?