A gas is compressed isothermally, and its internal energy
Chapter 15, Problem 15.12(choose chapter or problem)
A gas is compressed isothermally, and its internal energy increases. Is the gas an ideal gas? (a) No, because if the temperature of an ideal gas remains constant, its internal energy must also remain constant. (b) No, because if the temperature of an ideal gas remains constant, its internal energy must decrease. (c) Yes, because if the temperature of an ideal gas remains constant, its internal energy must increase.
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