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Iodine- 125 is radioactive and has a half life of 60.25 days. How much of a 9.30mg sample would be left after 158 . days?

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Iodine- 125 is radioactive and has a half life of 60.25 days. How much of a 9.30mg sample would be left after 158 . days? Round your answer to 2 significant digits. Also, be sure your answer has a unit symbol

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