Question: A system absorbs 300 J from a reservoir at 300 K and 200 J from a reservoir at 400 K. It then returns to its

A system absorbs 300 J from a reservoir at 300 K and 200 J from a reservoir at 400 K. It then returns to its original state, doing 100 J of work and rejecting 400 J of heat to a reservoir at a temperature T.

(a) What is the entropy change of the system for the complete cycle?

(b) If the cycle is reversible, what is the temperature T?

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