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Author Question: Air expands adiabatically (no heat in, no heat out) from T = 300 K and P = 100 atm to a final ... (Read 80 times)

dmcintosh

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on: Jul 28, 2018
Air expands adiabatically (no heat in, no heat out) from T = 300 K and P = 100 atm to a final pressure of 1 atm. Treat the gas as ideal with g = 1.4, and determine the final temperature. Compare your result to the boiling points of nitrogen (77.4 K) and oxygen (90.2 K). Could this method result in the liquification of air?

Question 2

One mole of helium gas expands adiabatically from 2 atm pressure to 1 atm pressure. If the original temperature of the gas is 20C, what is the final temperature of the gas? (g = 1.67)


tandmlomax84

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Reply #1 on: Jul 28, 2018
Answer to Question 1

80.5 K, some oxygen would liquify

Answer to Question 2

222 K


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