A Monoatomic Ideal Gas Is Sealed Within a Container Featuring

A monoatomic ideal gas is sealed within a container featuring a piston fixed in place at one end. How will the heat capacity C of the gas change if the piston is allowed to move freely?

A) C will increase, because the gas can expend energy by doing work on the piston.
B) C will decrease, because the movement of the piston will prevent heat transfer.
C) C will remain constant, because the internal energy of the gas can no longer change.
D) C will remain constant, because the gas molecules are monoatomic and ideal.

Correct Answer:

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