2. As shown in the figure, 20 ft3 of air at T = 600 R, 100...

 

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2. As shown in the figure, 20 ft3 of air at T₁ = 600 °R, 100 lbf/in² undergoes a polytropic expansion to a final pressure of 51.4 lbf/in². The process follows pV12 = constant. The work is W= 194.34 Btu. Assuming ideal gas behavior for the air, and neglecting kinetic and potential energy effects, determine: a) The mass of air, in lb, and the final temperature, in °R. b) The heat transfer, in Btu em Air W = 194.34 Btu 2. As shown in the figure, 20 ft3 of air at T₁ = 600 °R, 100 lbf/in² undergoes a polytropic expansion to a final pressure of 51.4 lbf/in². The process follows pV12 = constant. The work is W= 194.34 Btu. Assuming ideal gas behavior for the air, and neglecting kinetic and potential energy effects, determine: a) The mass of air, in lb, and the final temperature, in °R. b) The heat transfer, in Btu em Air W = 194.34 Btu