SOLUTION: The half-life of a radioactive isotope is the time it takes for a quantity of the isotope to be reduced to half its initial mass. Starting with 200 grams of a radioactive isotope

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Question 1030584: The half-life of a radioactive isotope is the time it takes for a quantity of the isotope to be reduced to half its initial mass. Starting with
200 grams of a radioactive isotope, how much will be left after
5 half-lives?
Use the calculator provided and round your answer to the nearest gram.

Answer by Cromlix(4381) About Me  (Show Source):
You can put this solution on YOUR website!
Hi there,
The half-life of a radioactive isotope is
the time it takes for a quantity of the
isotope to be reduced to half its initial Activity.
200 gms - 100 gms 1 half life
100 gms - 50 gms 2 half lives
50 gms - 25 gms 3 half lives
25 gms - 12.5 gms 4 half lives
12.5 gms - 6.25 gms 5 half lives
= 6 gms.
Hope this helps :-)