A radioactive isotope has an activity of 809 mci after 305
A radioactive isotope has an activity of 8.09 mCi. After 3.05 hours the activity is 6.31 mCi. What is the half-life of the isotope?8.51 h
Need help on 2nd part
What is the activity after an additional 3.05 hours in mCi units?
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