Standard enthalpy of vapourisation for CCl_4 is 30.5 kJ mol^-1. Heat required for vapourisation of 284 g of CCl_4 at constant temperature is ____ kJ.…

Standard enthalpy of vapourisation for $\displaystyle \mathrm{CCl}_4$ is $\displaystyle 30.5 \mathrm{~kJ} \mathrm{~mol}^{-1}$. Heat required for vapourisation of $\displaystyle 284$ g of $\displaystyle \mathrm{CCl}_4$ at constant temperature is $\displaystyle \_\_\_\_$ kJ. (Given molar mass in $\displaystyle \mathrm{g} \mathrm{mol}^{-1} ; \mathrm{C}=12, \mathrm{Cl}=35.5$ )