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Calculate the loss in mass during the ch...

Calculate the loss in mass during the change:
`._(3)Li^(7) + ._(1)He^(1) rarr 2 ._(2)He^(4) + 17.25 MeV`

Text Solution

Verified by Experts

Total energy change during reaction (given) `= 17.25 MeV`
We know that energy = mass defect `xx 931 MeV`
or `E = Deltam xx 931`
`:.` Mass defect `(Delta m) = (E )/(931) = (17.25)/(931) = 0.0185`
or `Delta m = 0.185 "amu" = 3.07 xx 10^(-26)g`
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