Practice Exercise 1 Electricity is generated in space vehicles from the heat produced by the radioactive decay of plutonium-238: 23SPU → 23U + ŽHe. The atomic masses of plutonium-23 and uranium-234 are 238.049554 amu and 234.040946 am respectively. The mass of an alpha particle is 4.001506 amu How much energy in kJ is released when 1.00 g of pluto- nium-238 decays to uranium-234?

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