We use the formula $q=mcdeltaT$, where $q$ is the heat, $m$ is the mass, $c$ is the specific heat capacity, and $deltaT$ is the change in temperature.
For mercury, $m=170. \mathrm{g}$, $c=0.138 \mathrm{J/g*oC}$, and $deltaT=357^{\circ} \mathrm{C}-25^{\circ}
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