The following diagram represents a reversible Carnot cycle for an ideal gas: a. What is the thermodynamic efficiency of the engine? b. How much heat is absorbed at 400 K? c. How much heat is rejected at 300 K? d. What is the entropy change in the process A B? e. What is the entropy change in the entire cycle? A Net work done = 800 J P. 400 K C 300 K V f. What is the Gibbs energy change in the process A B? g. In order for the engine to perform 2 kJ of work, how much heat must be absorbed?