You are given that Mass of _3^7 Li =7.0160 u, Mass of_2^4 He =4.0026 u and Mass of _1^1 H =1.0079 u. When 20 g of _3^7 Li is converted into _2^4 He…

You are given that Mass of $\displaystyle { }_3^7 \mathrm{Li}=7.0160 \mathrm{u}$, $$\text { Mass of }{ }_2^4 \mathrm{He}=4.0026 \mathrm{u} $$ and Mass of $\displaystyle { }_1^1 \mathrm{H}=1.0079 \mathrm{u}$. When $\displaystyle 20$ g of $\displaystyle { }_3^7 \mathrm{Li}$ is converted into $\displaystyle { }_2^4 \mathrm{He}$ by proton capture, the energy liberated, (in $\displaystyle \mathrm{kWh})$, is : [Mass of nucleon $\displaystyle =1 \mathrm{GeV} / \mathrm{c}^2$ ]