1 kg of a certain gas is contained within a piston-cylinder assembly. The gas undergoes a process for which the pressure

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1 Kg Of A Certain Gas Is Contained Within A Piston Cylinder Assembly The Gas Undergoes A Process For Which The Pressure 1 (39.09 KiB) Viewed 43 times

1 kg of a certain gas is contained within a piston-cylinder assembly. The gas undergoes a process for which the pressure-volume relationship is pV = constant. Gas PV = constant The initial pressure is 3 bar, the initial volume is 0.25 m³, and the final volume is 0.35 m³. The change in specific internal energy of the gas in the process is uz-u1 = -70 kJ/kg. There are no significant changes in kinetic or potential energy. a) Determine the final pressure. (5 points) b) Sketch the process on a p-V diagram. (5 points) c) Calculate the work done by the piston, in kJ. (10 points) d) Apply the first law of thermodynamics and determine the net heat transfer for the process, in kJ. (15 points) e) Did the system gain or lose heat during the process? Justify your answer. (5 points)