A reversible heat engine carries 1 mole of an ideal monatomic gas aroung the cycle 1-2-3-1. Process 1-2 takes place at constant volume, process 2-3 take place at constant volume, process 2-3 is adiabatic, and process 3-1 takes place at constant pressure. Complete the values for the heat `Delta Q`, the change in internal energy `Delta U`, and the work done `Delta `, for each of the three processes and for the cycle as a whole.