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ricof

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## Homework Statement

1m^3 of air is heated reversibly at constant pressure from 288K to 573K. Then it is cooled reversibly at constant volume back to the initial T. Initial P is 103kPa Calculate overall change in entropy.

Cp=1.02

Cv=0.702

## Homework Equations

dS=Cp x ln(T2/T1)-R x ln(P2/P1)

## The Attempt at a Solution

I have found P2 to be 911kPa but when I put all the data into the above equation I end up with the wrong answer (0.076kJ/K). Please help!

I have found