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Question 3, 4.6.19 HW Score: 0%, 0 of 8 points > O Points: 0 of 1 Save If 8 g of a radioactive substance are

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Question 3, 4.6.19 HW Score: 0%, 0 of 8 points > O Points: 0 of 1 Save If 8 g of a radioactive substance are present initially and 9 yr later only 4.0 g remain, how much of the substance, to the nearest tenth of a gram, will be present after 19 yr? After 19 yr, there will be g of the radioactive substance. (Do not round until the final answer. Then round to the nearest tenth as needed.)

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