Thermometer Ignition wires heat Stirrer sample A bomb calorimeter, or constant volume calorimeter, is a device often used to determine the heat of combustion of fuels and the energy content of foods. Since the "bomb" itself can absorb energy, a separate experiment is needed to determine the heat capacity of the calorimeter. This is known as calibrating the calorimeter. In the laboratory a student burns a 0.411-g sample of pyrene (C16H10) in a bomb calorimeter containing 1080. g of water. The temperature increases from 25.50 C to 28.50 C. The heat capacity of water is 4.184 J gloc-1. Water The molar heat of combustion is - 7851 kJ per mole of pyrene. C16H10(s) + 37/2 O2(g) 16 CO2(g) + 5 H2O(1) + Energy Calculate the heat capacity of the calorimeter. heat capacity of calorimeter = J/C Sample dish Burning Insulated outside chamber Steel sample bomb Combustion (bomb) calorimeter