A substance absorbs an amount of heat Q_1 in going from one state to another and releases an amount of heat Q_2 in coming back from the second state to the first state. How much work is done by the substance and what is the change in the internal energy of the substance ?

A substance absorbs an amount of heat Q_1 in going from one state to a

1.	A substance absorbs an amount of heat Q_1 in going from one state to another and releases an amount of heat Q_2 in coming back from the second state to the first state. How much work is done by the substance and what is the change in the internal energy of the substance ?
Answer» SOLUTION :`W=Q_1-Q_2,thetaU=0`

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A substance absorbs an amount of heat Q_1 in going from one state to another and releases an amount of heat Q_2 in coming back from the second state to the first state. How much work is done by the substance and what is the change in the internal energy of the substance ?

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