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11 The decay of the radioactive isotope technetium99m is modeled by the equationA Pe 0...

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11 The decay of the radioactive isotope technetium99m is modeled by the equationA Pe 0 1155t where A is the amount in grams of the isotope remaining after a given time t in hours and P is the initial amount in grams of the isotope If a scientist initially has 3 grams of technetium 99m in approximately how many hours will she have only 1 gram of the isotope remaining A 0 1 hour B 2 9 hours 26 0 hours 9 5 hours

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