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The isotope; Americium-241 undergoes alpha decay, what is the approximate K.E of the alpha particle? Assume...

The isotope; Americium-241 undergoes alpha decay, what is the approximate K.E of the alpha particle? Assume nearly all the mass difference has been transformed into the kinetic energy of the alpha particle. The following are known masses: Americium-241, 241.056823 u; Neptunium-237, 237.048168 u; alpha particle, 4.002602 u.

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