Question #160181

An all-electric home uses approximately 2000KWh of electric energy per month. How much uranium-235 would be required to provide this house with its energy needs for one year? Assume 100% conversion efficiency and 208 MeV released per fission.

Expert's answer

Convert 2000 kW·h to J:

Find how many fissions (uranium atoms) can provide this amount of energy:

One uranium-235 weighs 235·1.66·10^{-27} kg. So, the number of fissions we found above corresponds to the following mass of uranium:

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