2.4 {\g} coal is burnt in a bomb calorimeter in excess of oxygen at 298 {\K} and 1 {\atm} pressure. The temperature of the calorimeter rises from 298 {\K} to 300 {\K}. The enthalpy change during the combustion of coal is -x {\kJ} {\mol}^{-1}. The value of x is ________. (Nearest Integer) (Given : Heat capacity of bomb calorimeter 20.0 {\kJ} {\K}^{-1}. Assume coal to be pure carbon) [26-Jul-2022-Shift-1]