How do I calculate reaction free energy?

How to calculate the kinetic energy for a fission reaction?

  • A typical fission reaction is n + 235U ⇒ 134Xe + 100Sr + 2n. Calculate the difference between the kinetic energy (in eV) before the reaction and the kinetic energy after the reaction. (The atomic masses of 235U, 134Xe and 100Sr are 235.04u, 133.90u, and 99.94u respectively, where u = 1.661 x10^-27kg)

  • Answer:

    All you have to do is calculate the mass energy of each side of the equation (using E=mc^2 for example) as total energy has to balance you know that the difference is the kinetic energy. Or at least that's how I'd do it.

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