Question 1

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)  18F) B) and C)
G) A) and E)

Question 2

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 wallF) A) and B)
G) D) and E)

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 torrF) C) and E)
G) D) and E)

Question 4

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)  0.032F) A) and E)
G) B) and D)

Question 5

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)  6.73F) B) and D)
G) A) and D)

Question 6

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)  1860F) B) and D)
G) C) and D)

Question 7

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 8

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)  0.592F) A) and E)
G) All of the above

Question 9

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 
D)  CO2 2 2 
E)  CO2 2 2F) C) and D)
G) None of the above

Question 10

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)  38.8F) D) and E)
G) A) and E)

Question 11

The main component of air is oxygen.

Accepted Answer

A) True 
 B)False

Question 12

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 fastF) C) and D)
G) B) and D)

Question 13

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)  NeF) None of the above
G) C) and E)

Question 14

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)  0.026F) A) and C)
G) A) and E)

Question 15

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)  11.0F) A) and D)
G) B) and E)

Question 16

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)  8.17F) A) and E)
G) C) and E)

Question 17

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 °CF) B) and E)
G) B) and C)

Question 18

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.F) A) and E)
G) B) and E)

Question 19

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)  1.60F) A) and C)
G) A) and E)

Question 20

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

Accepted Answer

A)  NH3
B)  H2S
C)  CO
D)  NO2
E)  HCNF) A) and C)
G) B) and C)

Exam 10: Gases

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

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The volume of an ideal gas is zero at ________.

Correct AnswerverifiedShow Answer

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

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

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How much faster does 235UF6 effuse than 238UF6?

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The main component of air is oxygen.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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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.

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How much faster does ²³⁵UF₆ effuse than ²³⁸UF₆?

Correct Answer
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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?

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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?

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

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

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

Correct Answer
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