Heat Q fl ows spontaneously from a reservoir at 394 K into
Chapter , Problem 76(choose chapter or problem)
Heat Q fl ows spontaneously from a reservoir at 394 K into a reservoir at 298 K. Because of the spontaneous fl ow, 2800 J of energy is rendered unavailable for work when a Carnot engine operates between the reservoir at 298 K and a reservoir at 248 K. Find Q.
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