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A cylinder sealed with a piston contains an ideal gas. Heat is added to the gas...

A cylinder sealed with a piston contains an ideal gas. Heat is added to the gas while the piston remains locked in place until the absolute temperature of the gas doubles.

1. The pressure of the gas a. doubles b. stays the same c. drops in half

2. The work done by the surroundings on the gas is a. positive b. negative c. zero

3. The thermal energy of the gas a. doubles b. stays the same c. drops in half

4. Sketch a pV diagram for this process as carefully as you can.

(5-10) Now the ideal gas is returned to its initial state. This time, heat is added to the ideal gas at constant pressure until the absolute temperature of the gas doubles.

5. A constant pressure process is achieved by a. locking the piston in place b. insuring that the piston can move up or down without friction c. carrying out the process slowly in a cylinder that’s in good thermal contact with the environment d. carrying out the process rapidly in a well-insulated cylinder

6. The volume of the gas a. doubles b. stays the same c. drops in half

7. The work done by the gas on the surroundings is a. positive b. negative c. zero

8. The thermal energy of the gas a. doubles b. stays the same c. drops in half

9. Sketch a pV diagram for this process as carefully as you can.

10. In which case is more heat added to the ideal gas? a. constant volume process b. constant pressure process c. the same amount of heat is added in both cases

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Answer #1

A cylinder sealed with a piston contains an ideal gas. Heat is added to the gas while the piston remains locked in place until the absolute temperature of the gas doubles.

1. The pressure of the gas.                    (doubles)

2. The work done by the surroundings on the gas is positive.

3. The thermal energy of the gas doubles.

Now the ideal gas is returned to its initial state. This time, heat is added to the ideal gas at constant pressure until the absolute temperature of the gas doubles.

5. A constant pressure process is achieved by

a. locking the piston in place

6. The volume of the gas stays the same.

7. The work done by the gas on the surroundings is positive.

8. The thermal energy of the gas stays the same.

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