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how much energy is released in the follo...

how much energy is released in the following reaction : ^7Li+p alpha+alpha`.
Atoms mass pf ``^7Li=7.0160 u`and that of ``^4He=4.0026 u`.

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The correct Answer is:
A, C
`Li^7 + p rarr alpha + alpha + E, `
`Li^7 = 7.016u`
`alpha = ^4He = 4.0026u ,
`p=1.007276u`
`E = Li^7 + P -2alpha`
`=(7.016 + 1.007276)u`
`-(2 xx 4.0026)u
`=(8.023273 - 8.0052)u`
`=0.018076 u`
`=0.018076 xx 931`
`= 16.828 = 16.83 MeV` .
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