A sample of n-octane (1.14 g) was completely burnt in excess of oxygen in a bomb calorimeter, whose heat capacity is 5 kJ K^-1. As a result of…

A sample of n-octane ($\displaystyle 1.14$ g) was completely burnt in excess of oxygen in a bomb calorimeter, whose heat capacity is $\displaystyle 5 \mathrm{~kJ} \mathrm{~K}^{-1}$. As a result of combustion reaction, the temperature of the calorimeter is increased by $\displaystyle 5$ K . The magnitude of the heat of combustion of octane at constant volume is $\displaystyle \_\_\_\_$ $\displaystyle \mathrm{kJ} \mathrm{mol}^{-1}$ (nearest integer).