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## Homework Statement

What is the amount of energy released when 1g of uranium 235 undergoes fission? Fission of uranium is: uranium + n -> Ba + Kr +12n.

## Homework Equations

E=Δmc^2

## The Attempt at a Solution

I found the mass of the reactants to be 236.05256u and the products to be 235.92392u.

Thus Δm=-0.12864u

There are 2.56207x10^21 nuclei in 1g.

Therefore the energy needed is -165.122 J/g using E=Δmc^2. Is this the correct answer?