Question: Air is expanded from 3 4 0 . 0 psia and 5 0 0 F to 1 0 0 psia and 5 0 F .

Air is expanded from

340.0

psia and

500

F to

100

psia and

50

.

Assuming constant specific heats, determine the change in the specific entropy of air. Use the table containing the ideal gas specific heats of various common gases.

(

Round the final answer to five decimal places.

)

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