1. The problem statement, all variables and given/known data 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. 2. Relevant equations What is the magnitude of the net change in entropy as a result of this cycle? 3. 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!