Q. $0.3\ \mathrm{g}$ of ethane undergoes combustion at $27^{\circ}\mathrm{C}$ in a bomb calorimeter. The temperature of calorimeter system (including the water) is found to rise by $0.5^{\circ}\mathrm{C}$. The heat evolved during combustion of ethane at constant pressure is $\mathrm{kJ mol^{-1}}$. (Nearest integer) [Given : The heat capacity of the calorimeter system is $20\ \mathrm{kJ\ K^{-1}},\mathrm{R}=8.3\ \mathrm{JK^{-1}\ \ mol^{-1}}$. Assume ideal gas behaviour. Assume ideal gas behaviour. Atomic mass of $\mathrm{C}$ and $\mathrm{H}$ are $12$ and $1\ \mathrm{g\ mol^{-1}}$ respectively]