One mole of a monatomic ideal gas, in the initial state T = 273 K, P = 1 atm, is subjected to the following three processes, each of which is conducted reversibly: a. A doubling of its volume at constant pressure, b, then a doubling of its pressure at constant volume, c, then a return to the initial state along the path P = 6.643 x 10-4V +0.6667. Calculate the heat and work effects which occur during each of the three processes.