You are designing a Carnot engine that has 2 mol of CO2 as its working substance

Question

You are designing a Carnot engine that has 2 mol of CO2 as its working substance; the gas may be treated as ideal. The gas is to have a maximum temperature of 527 C and a maximum pressure of 5.00 atm. With a heat input of 400 J per cycle, you want 300 J of useful work.

1) Find the temperature of the cold reservoir.

2) For how many cycles must this engine run to melt completely a 10.0-kg block of ice originally at 0.0 ?C, using only the heat rejected by the engine?

Please use my numbers, and be thorough in the steps so I can learn. Thank you.

Explanation / Answer

1. Efficiency=work done/heat input

                1-TC/TH=300/400

                1-TC

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