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
2
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A container holds 6.4 moles of gas. Hydrogen gas makes up 25% of the total moles in the container. If the total pressure is 1.24 atm. What is the partial pressure of hydrogen?Use .

Question illustration
A
0.31 atm
B
0.93 atm
C
5.2 atm
D
31 atm
3

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
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

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

A
Boyle’s law
B
Charles’s law
C
Dalton’s law
D
Gay-Lussac’s law
6

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
7

The gas in the piston is being heated, and the piston has moved upward. The observation will be summarized in a row of the incomplete table below.RowNameObservationVariables1Boyle's law Volume increases when pressure decreases?2Charles’s law??3Gay-Lussac’s law?Temperature, pressure4Combined gas law??What are the variables for this piston?

Question illustration
A
temperature only
B
temperature and volume
C
pressure and number of molecules
D
volume and number of molecules
8

The absolute temperature of a gas is increased four times while maintaining a constant volume. What happens to the pressure of the gas?

A
It decreases by a factor of four.
B
It increases by a factor of four.
C
It decreases by a factor of eight.
D
It increases by a factor of eight.
9

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
10

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

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