An ideal gas is taken through a Carnot cycle.  The isothermal expansion occurs at 250oC, and the isothermal compression takes palace at 50oC.  The gas takes in 1.20 x 105 J of energy from the hot reservoir during the isothermal expansion. (a) What is the efficiency of the Carnot engine. (b) Calculate the change in entropy along 250oC isotherm. (c) Calculate the change in entropy along the 50oC isotherm

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