Chemistry Question from JEE Main 2025 · 3 April, Shift 2

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