A radioactive isotope has an activity of 839 mci after 330
A radioactive isotope has an activity of 8.39 mCi. After 3.30 hours the activity is 6.71 mCi. What is the half-life of the isotope?
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a radioactive isotope has an activity of 839 mci after 330 hours the activity is 671 mci what is the half-life of the
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