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The internal energy change when a system...

The internal energy change when a system goes fromk state `A` to `B` is `40 kJ mol^(-1)`. If the system goes from `A` to `B` by a reversible path and returns to state `A` by an irreversible path, what would be the net change in internal energy?

A

40 kJ

B

`gt` 0 kJ

C

`lt` 40 kJ

D

Zero

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The correct Answer is:
D
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