Answer
489 J
Work Step by Step
We find:
$w=-P\Delta V$
$=-(1.0\,atm)(0.85\,L-0.10\,L)$
$=-0.75\,L\cdot atm$
$=-0.75\,L\cdot atm\times\frac{101.325\,J}{1\,L\cdot atm}$
$=-76\,J$
Since heat is absorbed, $q$ is taken as positive.
$\Delta E= q+w= 565\,J+(-76\,J)$
$=489\,J$
