If you decreased the volume of a sample of gas by a factor of three while maintaining a constant pressure, how would the absolute temperature of the gas be affected?
A gas at 300 K and 4.0 atm is moved to a new location with a temperature of 250 K. The volume changes from 5.5 L to 2.0 L. What is the pressure of the gas at the new location?
What is the partial pressure of 0.50 mol Ne gas combined with 1.20 mol Kr gas at a final pressure of 730 torr?
answer
it would decrease threefold
9.2 atm
215 torr
question
How will the volume of a gas be affected if the pressure is tripled, but the temperature remains the same?
Why might a rubber raft burst if it is left in the sun on a summer day?
answer
it is decreased to one third of its original volume
temperature increases, causing interior pressure to increase
question
Complete the table by filling in the missing information.
answer
A - pressure, volume
B - temperature, moles of gas
C - Charles's law
D - V = kT
E - temperature, pressure
F - P = kT
G - number of moles only
question
Charles's law
Gay-Lussac's law
Boyle's law
answer
d
b
e
question
A and B are two gases that are mixed together; 2.50 mol A is mixed with 0.85 mol B. If the final pressure of the mixture is 1.75 atm, what are the partial pressures of A and B?
Suppose that 0.25 mole of gas C was added to the mixture without changing the total pressure of the mixture.
How does the addition of C to the mixture change the mole fraction of gas A?
How does the addition of C to the mixture change the partial pressure of gas A?
What is the partial pressure of C?
answer
1.31 atm A
0.44 atm B
decreases it
decreases it
0.12 atm C
question
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?
answer
5.37 atm
question
If two gases are present in a container, the total pressure in the container is equal to
answer
he sum of the pressures that are exerted by each of the two gases.
question
The absolute temperature of a gas is increased four times while maintaining a constant volume. What happens to the pressure of the gas?
answer
It increases by a factor of four.
question
Which law states that the volume and absolute temperature of a fixed quantity of gas are directly proportional under constant pressure conditions?
answer
Charles's law
question
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?
answer
1.6 atm
question
The incomplete table below shows selected characteristics of gas laws.
Which constants would most likely be filled in the first row of the table?
answer
temperature and moles of gas
question
A scientist is measuring the pressure that is exerted by each of the following gases in the atmosphere: carbon dioxide, oxygen, and nitrogen. Which term most likely describes what she is measuring?
answer
partial pressure
question
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.
What are the variables for this piston?
answer
temperature and volume
question
The incomplete table below shows selected characteristics of gas laws.
What are the variables in Gay-Lussac's law?
answer
pressure and temperature
question
Which equation is derived from the combined gas law?
answer
V1/T1 = V2/T2
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