14.4 15.0 L of an ideal monatomic gas at 3.00 atm and 450 K arecontained in a cylinder with a piston. The gas first coolsisochorically to 270 K (step 1). It then expands isobarically backto its original temperature (step 2), and then contractsisothermally back to its original volume (step 3). a) Show theseries of processes on a pV diagram. b) Calculate the temperature,pressure, and volume of the system at the end of each step in theprocess. Indicate the p and V values on the pV diagram. c) Computethe total work done by the gas on the piston during each step ofthe cycle in L - atm, and the total work done by the gas for onecomplete cycle. d) Compute the heat added during each step of thecycle in L - atm, and the net heat added for one cycle. Compare thetotal work done with the net heat added. e) Is this an engine or arefrigerator? If it is an engine, what is its efficiency; if it isa refrigerator, what is its coefficient of performance?
