C ( s )+ O_2( g ) → CO_2( g )+400 kJ; C ( s )+1/2 O_2( g ) → CO ( g )+100 kJ When coal of purity 60 % is allowed to burn in presence of insufficient…

$$\begin{aligned} & \mathrm{C}(\mathrm{~s})+\mathrm{O}_2(\mathrm{~g}) \rightarrow \mathrm{CO}_2(\mathrm{~g})+400 \mathrm{~kJ} \\ & \mathrm{C}(\mathrm{~s})+\frac{1}{2} \mathrm{O}_2(\mathrm{~g}) \rightarrow \mathrm{CO}(\mathrm{~g})+100 \mathrm{~kJ} \end{aligned} $$ When coal of purity $\displaystyle 60 \%$ is allowed to burn in presence of insufficient oxygen, $\displaystyle 60 \%$ of carbon is converted into ' CO ' and the remaining is converted into ' $\displaystyle \mathrm{CO}_2$ '. The heat generated when $\displaystyle 0.6$ kg of coal is burnt is \_\_\_\_.