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How much work needs to be added to cool down 0,500 liters of tap water from...

How much work needs to be added to cool down 0,500 liters of tap water from +10,0 degrees Celsius to ice whose temperature is -20,0 degrees Celsius if the cooling machine that is used is a Carnot process that operates between +20 and -20 degrees Celsius?

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Work done = 3.663 105 cal

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