A rigid tank contains 2 kg of an ideal gas at 4 atm and 40oC. Now a

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A rigid tank contains 2 kg of an ideal gas at 4 atm and 40oC. Now a valve is opened, and half of mass of the gas is allowed to escape. If the final pressure in the tank is 2.2 atm, the final temperature in the tank is
(a) 71oC
(b) 44oC
(c) 2100oC
(d) 20oC
(e) 172oC
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Thermodynamics An Engineering Approach

ISBN: 978-0073398174

8th edition

Authors: Yunus A. Cengel, Michael A. Boles

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