Question

A hydrocarbon sample was burned in a bomb calorimeter. The temperature of the calorimeter and the 1.00 kg of water rose from 20.45°C to 23.65°C. The heat capacity of the calorimeter, excluding the water, is 2.21 kJ/°C. determine the heat released by the combustion.

Answer 1

Add the values of
M*C*(delta T) for the water and the calorimeter. That will give you the answer.

C is the specific heat and delta T is the temperature change. M is the mass.

For the calorimeter, they tell you what the product M*C (the heat capacity) is, so you don't need to know the mass.

Answer 2

13.3