Two and one half pounds of air (R=53.3) follow a polytropic process. At initial conditions the pressure is 85 psia and the temperature is 470F. At the final conditions, volume is 16 cu ft, and temperature is 140F. The change in entropy from initial to final states is: a) -4.09 units b) -3.09 units c) -2.09 units d) -1.09 units

Two and one half pounds of air (R=53.3) follow a polytropic process. At initial conditions the pressure is 85 psia and the temperature is 470F. At the final conditions, volume is 16 cu ft, and temperature is 140F. The change in entropy from initial to final states is: a) -4.09 units b) -3.09 units c) -2.09 units d) -1.09 units

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Description: Two and one half pounds of air (R=53.3) follow a polytropic process. At initial conditions the pressure is 85 psia and the temperature is 470F. At the final conditions, volume is 16 cu ft, and temperature is 140F. The change in entropy from initial t

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter31: Gas Heat

Section: Chapter Questions

Problem 5RQ: The specific gravity of natural gas is A. 0.08. B. 1.00. C. 0.42. D. 0.60.

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