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Q&A: Regarding Calculating the Energy released in a fission reaction?

Question by Lennox BE: Regarding Calculating the Energy released in a fission reaction?
Uranium 235 is bombarted with a neutron, causing it to undergo fission and break into xenon 136, strontium 90, and 10 neutrons. I need to calculate the energy relased, and all the masses are given to me.

I know that i must calculate mass on the left side, and mass on the right side. Then find the mass defect, and then plug into E=mc^2

But my question is, when im calculating mass on the left side do I add the mass of uranium235 AND the mass of neutron or just the mass of uranium?

Best answer:

Answer by daisy
ull have to add mass of neutron

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