The initial state of a quantity of monatomic ideal gas is P=1atm V=1liter and T=373K. The gas is isothermally expanded to a volume of 2 liters and is then cooled at constant pressure to the volume V. this volume is such that a reversible adiabatic compression to a pressure of 1 atm returns the system its initial state. All of the changes of state are conducted revisable adiabatic. Calculate the total work done on or by the gas.