A system undergoes a change of state during which 80 kJ of heat is transferred to it and it does 60 kJ of work. The system is brought hack to its original slate through a process during which 100 kJ of heat is transferred to it. The work done by the system is:

A system undergoes a change of state during which 80 kJ of heat is tra

1.	A system undergoes a change of state during which 80 kJ of heat is transferred to it and it does 60 kJ of work. The system is brought hack to its original slate through a process during which 100 kJ of heat is transferred to it. The work done by the system is:
A.	40 kJ
B.	60 KJ
C.	120 kJ
D.	180 kJ
Answer» D. 180 kJ

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A system undergoes a change of state during which 80 kJ of heat is transferred to it and it does 60 kJ of work. The system is brought hack to its original slate through a process during which 100 kJ of heat is transferred to it. The work done by the system is:

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