A mass of 25 lbm of helium undergoes a process from an initial state of 50 ft

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A mass of 25 lbm of helium undergoes a process from an initial state of 50 ft3/lbm and 60°F to a final state of 10 ft3/lbm and 240°F. Determine the entropy change of helium during this process, assuming

(a) The process is reversible

(b) The process is irreversible.

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Fundamentals of Thermal-Fluid Sciences

ISBN: 978-0078027680

5th edition

Authors: Yunus A. Cengel, Robert H. Turner, John M. Cimbala

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