Avogadro's number, No, of monatomic ideal gas particles undergoes this cycle: starting from Po, To, it contracts adiabatically to 2Po, then it expands isothermally, then it contracts isobarically (at constant pressure). (a) Sketch P vs V for the cycle, indicating the values of P, V, and T in terms of Po, Vo and To for all points. (b) How much work is done on the system in each leg of the cycle? (c) What is the change in internal energy for each leg of the cycle? (d) How much energy enters the gas on each leg of the cycle?