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. Thermometer Ignition wires heat sample Stirrer 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 0.606-9 sample of acetylsalicylic acid (CoH904) in a bomb calorimeter containing 1080. g of water. The temperature increases from 24.80 C to 27.20 C. The heat capacity of water is 4.184 ) o loci Water The molar heat of combustion is -3869 k) per mole of acetylsalicylic acid. CoH8O4(s) + 9 02(9) 9 CO2(g) + 4H2O(l) + Energy Calculate the heat capacity of the calorimeter. Insulated Sample Burning Steel outside dish sample bomb chamber Combustion (bomb) calorimeter. heat capacity of calorimeter 3/C