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The first law of thermodynamics is ΔU 5 Q 1 W. For each of the following...

The first law of thermodynamics is ΔU 5 Q 1 W. For each of the following cases, state whether the internal energy of an ideal gas increases, decreases, or remains constant: (a) No energy is transferred to the gas as it expands to twice its original volume. (b) The gas volume is held constant while energy Q is removed. (c) The gas volume is held constant and no energy is transferred to or from the gas. (d) The gas temperature increases.

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