# How can a calorimeter measure energy?

The calorimeter is an insulated container, in which we place a measured mass of water. We know that for every ${1.00}^{o}$C temperature rise, each gram of water in the calorimeter absorbs 1 calorie (or 4.184J) of heat energy.
(100.0 g x ${1.50}^{o}$C x 1 calorie/${g}^{o}$C)