Calculate the mass of lead [0.0308 {\rm cal}/({\rm g} \times^\circ {\rm C})] that releases 53.5cal as the metal cools from 36.0^\circ C to 25.2^\circ C.
A 15.5g sample of titanium [0.125 {\rm cal}/({\rm g} \times^\circ {\rm C})] loses 32.6cal of heat.
If the initial temperature is 28.9^\circ C, what is the final temperature?