Asked by vanessa
the half life of isotope X is 2.0 years how many years would it take for 4.0 mg sample of X to decay and have .50 mg of it remain?
Answers
Answered by
Steve
.5mg is 1/8 of 4 mg
1/8 = (1/2)^3
so, that's 3 half-lives
1/8 = (1/2)^3
so, that's 3 half-lives
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