What is the loss in mass during the change- 3 Li 7-1 H 1- 22 He 4-17-25 MeVA- 0-285 amuB- 0-385 amuC- 0-225 amuD- 0-185 amu

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Mass Energy Equivalence

What is the l...

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What is the loss in mass during the change: $_{3} L i^{7} +_{1} H^{1} \to 2_{2} H e^{4} + 17.25 M e V$

0.225 amu

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0.185 amu

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0.285 amu

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0.385 amu

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Solution

The correct option is B 0.185 amu
Total energy change during reaction (given) = 17.25 MeV We know that energy = mass effect $\times$ 931 MeV or E = $Δ m \times 931$
$∴ M a s s d e f e c t (Δ m) = \frac{E}{931} = \frac{17.25}{931} = 0.0185 a m u$

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_{3} L i^{7} +_{1} H^{1} \to 2_{2} H e^{4} + 17.25 M e V

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What is the loss in mass during the change: 3Li7+1H1→2 2He4+17.25 MeV

The correct option is B 0.185 amuTotal energy change during reaction (given) = 17.25 MeV We know that energy = mass effect × 931 MeV or E = Δm×931 ∴Mass defect (Δm)=E931=17.25931=0.0185amu

What is the loss in mass during the change: $_{3} L i^{7} +_{1} H^{1} \to 2_{2} H e^{4} + 17.25 M e V$

The correct option is B 0.185 amu
Total energy change during reaction (given) = 17.25 MeV We know that energy = mass effect $\times$ 931 MeV or E = $Δ m \times 931$
$∴ M a s s d e f e c t (Δ m) = \frac{E}{931} = \frac{17.25}{931} = 0.0185 a m u$