Solution

Find the energy released during the nuclear reaction: $_{3}^{7}\mathrm{Li} + _{1}^{1}\mathrm{H} \rightarrow 2\,_{2}^{4}\mathrm{He}$ Mass of $_{2}^{4}\mathrm{He} = 4.00388\mathrm{u}$, $_{1}^{1}\mathrm{H} = 1.00814\,\mathrm{u}$ and of $_{3}^{7}\mathrm{Li} = 7.01823\mathrm{u}$.