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When 20J of work was done on a gas, 40J ...

When 20J of work was done on a gas, 40J of heat energy was released. If the initial internal enrgy of the gas was 70J, what is the final internal energy?

A

50J

B

60J

C

90J

D

110J

Text Solution

Verified by Experts

The correct Answer is:
A
`dQ-U_(f)-U_(i)+dW`
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