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An expansion process on a diatomic ideal gas (Cv = 5/2R), has a linear path b

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An expansion process on a diatomic ideal gas (Cv = 5/2R), has a linear path b

An expansion process on a diatomic ideal gas (Cv = 5/2R), has a linear path between the initial and final coordinates on a pV diagram. The coordinates of the initial state are: the pressure is 300kPa, the volume is 0.05m3, and the temperature is 390K. The final pressure is 90kPa and the final temperature is 340K. The change in the internal energy of the gas, in SI units, is closest to:
A)

-4800
B)

-2900
C)

4800
D)

2900
E)

zero

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