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Sondra
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Homework Statement
A heat engine operates between a high-temperature reservoir at 634 K and a low-temperature reservoir at 320 K. In one cycle, the engine absorbs 6540 J of heat from the high-temperature reservoir and does 2200 J of work.
Homework Equations
What is the magnitude of the net change in entropy as a result of this cycle?
The Attempt at a Solution
Qh=6540J
W=2200J
Find Qc=Qh-W=4340J
Sc=Qc/Tc= 4340J/320K=13.56J/K
Sh=Qh/Th= 6540J/634K= 10.32 J/K
Net S= Sc-Sh= 3.2 J/K
Please help. I feel like i am doing this problem correctly but I seem to be missing something. Thank you!