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Question 1 A heat engine uses a heat source at 600 C and has an ideal (Carnot)efficiency of 28 %.To increase the ideal efficiency to

Question 1

A heat engine uses a heat source at 600 C and has an ideal (Carnot)efficiency of 28 %.To increase the ideal efficiency to 45 % , what must be the temperature of the heat source?

Question 2.

What is the change in entropy of 400 g of steam at 100 C when it is condensed to water at 100 C?

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