4.4 A reversible refrigerator absorbs heat from water at 273 K in order to produce ice at the same temperature and rejects heat to the surroundings at 300 K. The work requirement of the refrigerator is to be met by a reversible heat engine operating between a heat source at 425 K and surroundings at 300 K. For each kilo joule of heat received by the engine, calculate: (a) The heat removed from water (b) The heat rejected to the surroundings.

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