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A general energy balance

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A general energy balance

(a) U+25B3E = W + Q

(b) U+25B3E = W – Q

(c) U+25B3E = -W + Q

(d) None of the mentioned

I got this question during an online exam.

This question is from Energy Balances without Reaction in section Energy Balances of Chemical Process Calculation

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Correct answer is (a) U+25B3E = W + Q

Best explanation: U+25B3E = W + Q.

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