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Assume the first law of thermodynamics is given as
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Answer #1

ΔU = Q - W

Since the gas expands, W > 0

So, Q > ΔU

Hence,

Decreased T and Q < 0: Possible

Increased T and Q < 0: Not possible

Increased T and Q > 0: Possible

Increased T and Q = 0: Not possible

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