Mathematics, 20.10.2019 10:30 iamasia06

Aradioactive material has a half-life of 18.4 days. after 55.2 days, there were 177 mg of the material. what mass of the material was originally present?

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Aradioactive material has a half-life of 18.4 days. after 55.2 days, there were 177 mg of the materi...