SOLUTION: A certain radioactive isotope has leaked into a small stream. One hundred days after the​ leak, 13​% of the original amount of the substance remained. Determine theR
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Question 1108265: A certain radioactive isotope has leaked into a small stream. One hundred days after the leak, 13% of the original amount of the substance remained. Determine the half-life of this radioactive isotope.
The half-life is about
days.
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
Half life is = amount reduced by 50%
Initial
100
50
25
12.5
Three half lives from 100 to 12.5
in 100 days
100/3 = 33.3 days
The half-life is about 33.3
days.
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