- #1

ZLing

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## Homework Statement

Nitrogen at 100

**°**C and 600 kPa expands in such a way it can be approximated by a polytropic process with n=1.2. Calculate the work and the heat transfer if the final pressure is 100 kPa.

## Homework Equations

## The Attempt at a Solution

I used the equation T2/T1=(P2/P1)^[(n-1)/n] to find T2. Then i used W=nCv(T1-T2) to calculate work done. Is this correct? But i don't know how to calculate the heat transfer.