ARMBRUSTER Thermodynamics 1st Semester Review

A steady force pushes in the piston
of a well-insulated cylinder. In this
process, the temperature of the gas

• Increases
• Stays the same
• Decreases
• Not enough info

100 J is added to a sample of ideal gas as heat. The gas then expands against a piston, doing 70 J of work. During this process

• The temperature of the gas increases
• The temperature of the gas decreases
• The temperature of the gas stays the same

What type of gas process is this?

• Isothermal
• Isobaric
• Adiabatic
• None of those

A gas follows the process shown. What is the final-to-initial temperature ratio Tf /Ti?

• 2
• 4
• 8
• 16

A sample of gas is in a cylinder with a moveable piston.
The force on the piston can be varied, altering the pressure and volume. A sample of gas is taken from an initial state
to a final state following a curve on the pV diagram shown. The final temperature is

• Higher than the Ti
• The same as Ti
• Lower than Ti

A sample of gas is in a cylinder with a moveable piston.
The force on the piston can be varied, altering the pressure and volume. A sample of gas is taken from an initial state
to a final state following a curve on the pV diagram shown. The final temperature is

• Higher than Ti
• The same as Ti
• Lower than Ti

A sample of gas is in a cylinder with a moveable piston.
The force on the piston can be varied, altering the pressure and volume. A sample of gas is taken from an initial state
to a final state following a curve on the pV diagram shown. The final temperature is

• Higher than Ti
• The same as Ti
• Lower than Ti

The thermal energy of an ideal gas depends on each of the following parameters EXCEPT:

• The number of moles of the gas.
• The ideal gas law constant.
• The temperature of the gas.
• The volume the gas occupies.

A cylinder of gas has an initial volume of 0.5 m3 and is at a pressure of 100 N/m2. If the piston does 10 J of work on the gas while compressing it, what is the new volume?

• 0.3 m3
• 0.4 m3
• 0.6 m3
• 0.7 m3

Two identical cylinders at the same temperature contain the same gas.  If B has twice the volume and half the number of moles as A, how does the pressure in B compare with the pressure in A?

• PB  =  1/2 PA
• PB  =  2 PA
• PB  =  1/4 PA
• PB  =  4 PA