A fluid at 0.7 bar occupying 0.09 m3 is compressed reversibly to a pressure of 3.5 bar according to the law pvn = constant. The fluid is then heated reversibly at constant volume until the pressure is 4 bar; the specific volume is then 0.5 m3/kg. A reversible expansion according to the law pv2 = constant restores the fluid to its initial state. b. Calculate the mass of the fluid present c. Determine the value of n in the first process d. Compute the net work of the cycle.