When 0. 485 g of compound x is burned completely in a bomb calorimeter containing 3000 g of water, a temperature rise of 0. 285°c is observed. What is δu of the reaction for the combustion of compound x? the hardware component of the calorimeter has a heat capacity of 3. 81 kj/°c. The specific heat of water is 4. 184 j/g·°c. The molar mass of compound x is 56. 0 g/mol.