Hi! Greetings! This is not really a problem set; I just made the question up to better understand PV diagrams of Carnot cycle.
Suppose you have a gas in a container with a movable piston, but is thermally insulated. If the volume of the gas increases, is heat absorbed by the system (the gas particles) or released by the system into the environment?
[itex]dQ = dU + dW[/itex]
[itex]dQ = dU + PdV[/itex]
The Attempt at a Solution
Hmm.. What I am thinking is that if the volume expands, the gas particles are less compressed and have more place to move around, so I guess the system should give off heat to the surroundings?