137. Solving a chemistry problem
99. Carnot´s ideal refrigeration machine transfers heat from a refrigerator with water at 00C to a refrigerator at 1000C. How much water needs to be frozen in the refrigerator to steam 3 kg of water in the boiler? The enthalpies of ice melting and water evaporation are 6.02 and 40.30 kJ / mol, respectively.
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