Question: What is the theoretical maximum efficiency of a heat engine that extracts heat from a high temperature reservoir at 155and rejects heat to a cold

What is the theoretical maximum efficiency of a heat engine that extracts heat from a high temperature reservoir at 155and rejects heat to a cold temperature reservoir of 35? Give your answer as a percentage of 1 d.p (eg if your answer is 87.1% then enter 87.1). The absolute temperature can be calculated from the temperature inby adding 273.15.

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