# Shearon Harris Nuclear Power Plant Case Study

Calculate the mass (in grams) of uranium 235 (U-235) in 1.26 X10⁵ kilograms of UO₂

U-235 undergoes fission when a neutron is added to the nucleus to release Kr-89 as one of the products and 3 neutrons. What is the missing isotope produced in this nuclear fission reaction? Write the complete nuclear fission reaction.

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What are the first two steps that occur? The first step will be an alpha decay; write out the equation for the alpha decay. Its product will go through a second (beta) decay; write out the equation for the beta decay.

U-238 has an extremely long half-life of 4.5 billion years. Using the isotopes from 3, what are the half lives of the 2 products. After 30 days, how many half lives have occurred?

Given 85 grams of Thorium 234, how many grams will remain after 72.3