AnswersTX-Chemistry B-CRUnit Test

Gas Laws Answers

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A scientist is measuring the pressure exerted by each of the following gases in the atmosphere: carbon dioxide, oxygen, and nitrogen. Which term most likely describes what the scientist is measuring?

A
final pressure
B
initial pressure
C
combined pressure
D
partial pressure
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A gas cylinder contains 2.0 mol of gas X and 6.0 mol of gas Y at a total pressure of 2.1 atm. What is the partial pressure of gas Y?Use .

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A
0.50 atm
B
1.6 atm
C
2.1 atm
D
2.8 atm
3

Which law is described by saying that doubling the absolute temperature will double the pressure of a sample of gas in a rigid container?

A
Boyle’s law
B
Charles’s law
C
Dalton’s law
D
Gay-Lussac’s law
4

Which equation represents the combined gas law?

A
P subscript 1 V subscript 1 equals P subscript 2 V subscript 2.
Option A
B
StartFraction V subscript 1 over T subscript 1 EndFraction equals StartFraction V subscript 2 over T subscript 2 EndFraction.
Option B
C
StartFraction P subscript 1 V subscript 1 over T subscript 1 EndFraction equals StartFraction P subscript 2 V subscript 2 over T subscript 2 EndFraction.
Option C
D
P subscript 1 V subscript 1 T subscript 1 equals P subscript 2 V subscript 2 T subscript 2.
Option D
5

A balloon that had a volume of 3.50 L at 25.0°C is placed in a hot room at 40.0°C. If the pressure remains constant at 1.00 atm, what is the new volume of the balloon in the hot room?Use .

Question illustration
A
2.19 L
B
3.33 L
C
3.68 L
D
5.60 L
6

Which law states that the volume and absolute temperature of a fixed quantity of gas are directly proportional under constant pressure conditions?

A
Boyle’s law
B
Charles’s law
C
Dalton’s law
D
Gay-Lussac’s law
7

If two gases are present in a container, the total pressure in the container is equal to

A
the sum of the pressures that are exerted by each of the two gases.
B
twice the sum of the pressures that are exerted by the individual gases.
C
the sum of the pressures that each gas would exert if they occupied twice the volume.
D
the sum of the pressures that each gas would exert if they occupied half the volume.
8

Five gases combined in a gas cylinder have the following partial pressures: 3.00 atm (N2), 1.80 atm (O2), 0.29 atm (Ar), 0.18 atm (He), and 0.10 atm (H). What is the total pressure that is exerted by the gases?Use .

Question illustration
A
5.08 atm
B
5.19 atm
C
5.27 atm
D
5.37 atm
9

The incomplete table below shows selected characteristics of gas laws.NameVariablesConstantsEquation? ??Charles’s law???temperature, pressure?Combined gas lawpressure, temperature, volume??Which constants would most likely be filled in the first row of the table?

Question illustration
A
temperature and moles of gas
B
volume and temperature
C
pressure and volume
D
pressure and moles of gas
10

The incomplete table below shows selected characteristics of gas laws.NameVariablesConstantsEquation? pressure, volumetemperature, moles of gasCharles’s law??Gay-Lussac’s law???combined gas law??What are the variables in Gay-Lussac’s law?

Question illustration
A
pressure and volume
B
pressure, temperature, and volume
C
pressure and temperature
D
volume, temperature, and moles of gas

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