Question 1

The volume of a sample of gas (2.49 g)was 752 mL at 1.98 atm and 62 °C. The gas is ________.

Accepted Answer

A) SO2 
B) SO3 
C) NH3 
D) NO2 
E) Ne 
A) SO2 
B) SO3 
C) NH3 
D) NO2 
E) Ne

Question 2

A fixed amount of gas at 25.0 °C occupies a volume of 8.66 L when the pressure is 629 torr. Use Charles's law to calculate the volume (L)the gas will occupy when the temperature is increased to 112 °C while maintaining the pressure at 629 torr.

Accepted Answer

A) 9.26 
B) 11.2 
C) 1.93 
D) 6.70 
E) 38.8 
A) 9.26 
B) 11.2 
C) 1.93 
D) 6.70 
E) 38.8

Question 3

Which of the following equations shows an incorrect relationship between pressures given in terms of different units?

Accepted Answer

A) 1.20 atm = 122 kPa 
B) 152 mm Hg = 2.03 × 104 Pa 
C) 0.760 atm = 578 mm Hg 
D) 1.0 torr = 2.00 mm Hg 
E) 1.00 atm = 760 torr 
A) 1.20 atm = 122 kPa 
B) 152 mm Hg = 2.03 × 104 Pa 
C) 0.760 atm = 578 mm Hg 
D) 1.0 torr = 2.00 mm Hg 
E) 1.00 atm = 760 torr

Question 4

Which of the following is not part of the kinetic-molecular theory?

Accepted Answer

A) Atoms are neither created nor destroyed by ordinary chemical reactions. 
B) Attractive and repulsive forces between gas molecules are negligible. 
C) Gases consist of molecules in continuous, random motion. 
D) Collisions between gas molecules do not result in the loss of energy. 
E) The volume occupied by all of the gas molecules in a container is negligible compared to the volume of the container. 
A) Atoms are neither created nor destroyed by ordinary chemical reactions. 
B) Attractive and repulsive forces between gas molecules are negligible. 
C) Gases consist of molecules in continuous, random motion. 
D) Collisions between gas molecules do not result in the loss of energy. 
E) The volume occupied by all of the gas molecules in a container is negligible compared to the volume of the container.

Question 5

SO2 (5.00 g)and CO2 (5.00 g)were placed in a 750.0 mL container at 50.0 °C. The total pressure in the container was ________ atm.

Accepted Answer

A) 0.192 
B) 4.02 
C) 2.76 
D) 6.78 
E) 1.60 
A) 0.192 
B) 4.02 
C) 2.76 
D) 6.78 
E) 1.60

Question 6

The main component of air is oxygen.

Accepted Answer

A) True 
 B)False

Question 7

A sample of gas (1.3 mol)occupies ________ L at 22 °C and 3.5 atm.

Accepted Answer

A) 0.079 
B) 0.67 
C) 9.0 
D) 14 
E) 0.032 
A) 0.079 
B) 0.67 
C) 9.0 
D) 14 
E) 0.032

Question 8

The volume of an ideal gas is zero at ________.

Accepted Answer

A) 0 °C 
B) -45 °F 
C) -273 K 
D) -363 K 
E) -273 °C 
A) 0 °C 
B) -45 °F 
C) -273 K 
D) -363 K 
E) -273 °C

Question 9

The density of NO2 in a 4.77 L tank at 738.4 torr and 45.0 °C is ________ g/L.

Accepted Answer

A) 1.71 
B) 1300 
C) 12.1 
D) 0.0169 
E) 8.17 
A) 1.71 
B) 1300 
C) 12.1 
D) 0.0169 
E) 8.17

Question 10

A gas at a pressure of 10.0 Pa exerts a force of ________ N on an area of 5.5 m2.

Accepted Answer

A) 55 
B) 0.55 
C) 5.5 
D) 1.8 
E) 18 
A) 55 
B) 0.55 
C) 5.5 
D) 1.8 
E) 18

Question 11

Arrange the following gases in order of increasing average molecular speed at 25 °C. He, O2, CO2, N2

Accepted Answer

A) He 2 2 2 
B) He 2 2 2 
C) CO2 2 2 2 2 2 2 2 2 
A) He 2 2 2 
B) He 2 2 2 
C) CO2 2 2 2 2 2 2 2 2

Question 12

The volume of hydrogen gas at 38.0 °C and 763 torr that can be produced by the reaction of 4.33 g of zinc with excess sulfuric acid is ________ L.

Accepted Answer

A) 1.68 
B) 2.71 × 10-4 
C) 3.69 × 104 
D) 2.84 
E) 0.592 
A) 1.68 
B) 2.71 × 10-4 
C) 3.69 × 104 
D) 2.84 
E) 0.592

Question 13

A gas mixture of N2 and CO2 has a total pressure of 8.00 atm and contains 12.5 mol of gas. If the partial pressure of N2 is 3.69 atm, how many moles of CO2 are in the mixture?

Accepted Answer

A) 5.77 
B) 3.69 
C) 4.31 
D) 11.0 
E) 6.73 
A) 5.77 
B) 3.69 
C) 4.31 
D) 11.0 
E) 6.73

Question 14

The deviation from ideal behavior of a gas is most evident at ________ and/or low temperature.

Accepted Answer

The answer of The deviation from ideal behavior of a...

Question 15

How much faster does 235UF6 effuse than 238UF6?

Accepted Answer

A) 1.013 times as fast 
B) 1.009 times as fast 
C) 1.004 times as fast 
D) 1.006 times as fast 
E) 1.018 times as fast 
A) 1.013 times as fast 
B) 1.009 times as fast 
C) 1.004 times as fast 
D) 1.006 times as fast 
E) 1.018 times as fast

Question 16

The volume occupied by 2.3 mol of gas at 35 °C and 2.0 atm pressure is ________ L.

Accepted Answer

A) 38 
B) 29 
C) 3.3 
D) 0.053 
E) 0.026 
A) 38 
B) 29 
C) 3.3 
D) 0.053 
E) 0.026

Question 17

The Mond process produces pure nickel metal via the thermal decomposition of nickel tetracarbonyl: Ni(CO)4 (l) → Ni (s) + 4CO (g).
What volume (L)of CO is formed from the complete decomposition of 444 g of Ni(CO)4 at 752 torr and 22.0 °C?

Accepted Answer

A) 0.356 
B) 63.7 
C) 255 
D) 20.2 
E) 11.0 
A) 0.356 
B) 63.7 
C) 255 
D) 20.2 
E) 11.0

Question 18

The kinetic-molecular theory predicts that pressure rises as the temperature of a gas increases because ________.

Accepted Answer

A) the average kinetic energy of the gas molecules decreases 
B) the gas molecules collide more frequently with the wall 
C) the gas molecules collide less frequently with the wall 
D) the gas molecules collide more energetically with the wall 
E) both the gas molecules collide more frequently with the wall and the gas molecules collide more energetically with the wall 
A) the average kinetic energy of the gas molecules decreases 
B) the gas molecules collide more frequently with the wall 
C) the gas molecules collide less frequently with the wall 
D) the gas molecules collide more energetically with the wall 
E) both the gas molecules collide more frequently with the wall and the gas molecules collide more energetically with the wall

Question 19

Of the following, ________ has the odor of rotten eggs.

Accepted Answer

A) NH3 
B) H2S 
C) CO 
D) NO2 
E) HCN 
A) NH3 
B) H2S 
C) CO 
D) NO2 
E) HCN

Question 20

How many moles of gas are there in a 53.7 L container at 24.6 °C and 845.9 torr?

Accepted Answer

A) 2.45 
B) 29.6 
C) 0.409 
D) 0.0241 
E) 1860 
A) 2.45 
B) 29.6 
C) 0.409 
D) 0.0241 
E) 1860

Exam 10: Gases

The volume of a sample of gas (2.49 g)was 752 mL at 1.98 atm and 62 °C. The gas is ________.

A fixed amount of gas at 25.0 °C occupies a volume of 8.66 L when the pressure is 629 torr. Use Charles's law to calculate the volume (L)the gas will occupy when the temperature is increased to 112 °C while maintaining the pressure at 629 torr.

Which of the following equations shows an incorrect relationship between pressures given in terms of different units?

Which of the following is not part of the kinetic-molecular theory?

SO2 (5.00 g)and CO2 (5.00 g)were placed in a 750.0 mL container at 50.0 °C. The total pressure in the container was ________ atm.

The main component of air is oxygen.

A sample of gas (1.3 mol)occupies ________ L at 22 °C and 3.5 atm.

The volume of an ideal gas is zero at ________.

The density of NO2 in a 4.77 L tank at 738.4 torr and 45.0 °C is ________ g/L.

A gas at a pressure of 10.0 Pa exerts a force of ________ N on an area of 5.5 m2.

Arrange the following gases in order of increasing average molecular speed at 25 °C. He, O2, CO2, N2

The volume of hydrogen gas at 38.0 °C and 763 torr that can be produced by the reaction of 4.33 g of zinc with excess sulfuric acid is ________ L.

A gas mixture of N2 and CO2 has a total pressure of 8.00 atm and contains 12.5 mol of gas. If the partial pressure of N2 is 3.69 atm, how many moles of CO2 are in the mixture?

The deviation from ideal behavior of a gas is most evident at ________ and/or low temperature.

How much faster does 235UF6 effuse than 238UF6?

The volume occupied by 2.3 mol of gas at 35 °C and 2.0 atm pressure is ________ L.

The Mond process produces pure nickel metal via the thermal decomposition of nickel tetracarbonyl: Ni(CO)4 (l) → Ni (s) + 4CO (g). What volume (L)of CO is formed from the complete decomposition of 444 g of Ni(CO)4 at 752 torr and 22.0 °C?

The kinetic-molecular theory predicts that pressure rises as the temperature of a gas increases because ________.

Of the following, ________ has the odor of rotten eggs.

How many moles of gas are there in a 53.7 L container at 24.6 °C and 845.9 torr?

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

Thermochemistry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Molecular Geometry and Bonding Theories

Liquids and Intermolecular Forces

Solids and Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Aqueous Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

Filters

SO₂ (5.00 g)and CO₂ (5.00 g)were placed in a 750.0 mL container at 50.0 °C. The total pressure in the container was ________ atm.

The density of NO₂ in a 4.77 L tank at 738.4 torr and 45.0 °C is ________ g/L.

A gas at a pressure of 10.0 Pa exerts a force of ________ N on an area of 5.5 m².

Arrange the following gases in order of increasing average molecular speed at 25 °C. He, O₂, CO₂, N₂

A gas mixture of N₂ and CO₂ has a total pressure of 8.00 atm and contains 12.5 mol of gas. If the partial pressure of N₂ is 3.69 atm, how many moles of CO₂ are in the mixture?

How much faster does ²³⁵UF₆ effuse than ²³⁸UF₆?

The Mond process produces pure nickel metal via the thermal decomposition of nickel tetracarbonyl: Ni(CO)₄ (l) → Ni (s) + 4CO (g). What volume (L)of CO is formed from the complete decomposition of 444 g of Ni(CO)₄at 752 torr and 22.0 °C?