A Carnot Cycle is operated (using 1 mole of an ideal gas as the working substance). The full cycle is A->B->C->D->A. A->B is an isothermal expansion at 1000K which also absorbs 150 kJ of heat. The isothermal compression (C->D) operates at 200 K. > #(a) what is the overall efficiency of the cycle? > #(b) how much work can be done by the engine as it operates through one cycle > #(c) how much heat is given off during the isothermal compression > #(d) what is the entropy change (for the gas) during the isothermal compression?