8. A piston-cylinder device, with a set of stops on the top initially contains 3 kg of air and 27 C. Heat is now transferred through the air, and the piston rises until it hits the stops, at which the vohume is twice the initial vohume. More heat was added until the pressure inside the cylinder also doubles. Determine the work done and the amount of heat transfer for this process. Ans (a) 258.37 kJ, 2199 kJ