Imagine that the cylinder from section II is no longer thermally insulated, and the piston is locked in place. The gas is initially at room temperature.
The cylinder is then placed into boiling water and reaches thermal equilibrium with the water. We refer to this process as process 2.
1. In process 2, do the following quantities increase, decrease, or remain the same? Explain.
• the temperature of the gas
• the internal energy of the gas
• the pressure of the gas
• the volume of the gas
2. Sketch process 2 on the PV diagram at right.
3. Is there any work done on the gas in process 2? Explain. Is your answer consistent with your PV diagram?
The energy transfer that takes place in this process is called
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