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15 J of work is done by a steady state system, what is the heat supplied to the system?

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15 J of work is done by a steady state system, what is the heat supplied to the system?

(a) – 15 J

(b) 15 J

(c) 10 J

(d) – 10 J

I have been asked this question during an interview.

The origin of the question is Energy Balances for Closed, Steady-State Systems in section Introduction to Energy Balances for Processes without Reaction and Calculation of Enthalpy Changes of Basic Chemical Engineering

1 Answer

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Best answer
The correct option is (b) 15 J

Easiest explanation: 0 = – 15 + Q, => Q = 15 J.

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