Question: A closed system passes from state 1 to state 2 while (200 mathrm{~kJ}) of heat is added and (280 mathrm{~kJ}) of work is done. As

A closed system passes from state 1 to state 2 while $200 \mathrm{~kJ}$ of heat is added and $280 \mathrm{~kJ}$ of work is done. As the system is returned to state $1,160 \mathrm{~kJ}$ of work is done on it. Calculate the heat transfer during process 2 to 1 .

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