Mathematics, 05.10.2020 14:01 smarty5187

iodine-131 is a radioactive isotope that is a by-product of emissions of other radioactive isotopes. after the 2011 earthquake in japan that damaged server also nuclear reactors, high levels of iodine-131 were found near the nuclear power plants. iodine-131 has a half life of 8 days. if authorities found an original sample of 2.5 grams right after an emission from the plant, how much iodine-131 would be left 30 days later?

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