brainiac2829 brainiac2829

10-12-2018
Mathematics

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Iodine-125 has a half-life of about 60 days. How many milligrams of a 1000 mg sample will remain after 240 days?

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LammettHash LammettHash

10-12-2018

240 days is 4 times the half-life, which means that a sample of 1000 mg will decay to

[tex]\dfrac{1000}{2^4}=\dfrac{125}2=62.5\,\mathrm{mg}[/tex]

after 240 days.

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