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## Homework Statement

A gas is compressed from 600cm

^{3}to 200cm

^{3}at a constant pressure of 400kPa . At the same time, 100J of heat energy is transferred out of the gas.

What is the change in thermal energy of the gas during this process?

## Homework Equations

Express the answer in Joules.

W

_{gas}=p(V

_{f}-V

_{i})=p/\v

## The Attempt at a Solution

400k(400cm.

^{3})=p/\v

I came up with a wrong answer of 160 J. Any help would be appreciated.

Thanks,

Jared