Answer
5300 J
Work Step by Step
$w=-P\Delta V=-(3.5\,atm)(25\,L-10\,L)$
$=-52.5\,L\cdot atm=-52.5\,L\cdot atm\times\frac{101.325\,J}{1\,L\cdot atm}$
$=-5300\,J$
Negative sign indicates that the work is done by the system. Work done by the system is 5300 J.
