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The net reaction for fusion on a star like our Sun is: 4H(1,1) ==> He(4,2) + 2e(0,+1)

Calculate the mass defect for this reaction. If one atom of He is formed this way, calculate the energy released. If one Kg of He is formed, calculate the energy released.

The masses of the particles are
H=1.00728amu He=4.00150amu e+=.00055amu

How do I solve this. I assume it requires physics?

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