Alexander Litvinenko was poisoned with 10 micrograms of the radioactive substance Polonium-210. Since radioactive decay follows a compounded continuously model,
we can determine the amount of substance left in Alexander Litvinenko's body at any
given time. If Polonium-210 has a decay rate of .502%, then determine the amount
of Polonium-210 left in his body after 140 days. Provide 3 decimal places and units
in your answer.
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