If 12 g of a radioactive substance are present initially and 8 yr later only 6 0 g remain how much of the substance to the

Question

If 12 g of a radioactive substance are present initially and 8 yr later only 6 0 g remain how much of the substance to the nearest tenth of a gram will be present after 15 yr After 15 yr there will beg of the radioactive substance Do not round until the final answer Then round to the nearest tenth as needed HID

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