The isotope iodine -131 has a half-life of 8 days. If an individual is injected with 100 mg of iodine-131 today, how much will remain in his body after 24 days? (assuming that none is lost through normal body channels? Time (days) Amount (mg) Today 100 mg

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The isotope iodine -131 has a half-life of 8 days. If an individual is injected with 100 mg of iodine-131 today, how much will remain in his body after 24 days? (assuming that none is lost through normal body channels?

Time (days)                                  Amount (mg)

    Today                                              100 mg

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