Asked by Joe
If radon-222 has a half-life of 3.8 days, determine how long it takes for only 1/8 of a sample to remain.
Answers
Answered by
DrBob222
Find k from the following.
k = 0.693/t<sub>1/2</sub>
Then substitute into the following
ln(No/N) = kt
Use a convenient number for No, then N will be 1/8 of that, solve for t.
k = 0.693/t<sub>1/2</sub>
Then substitute into the following
ln(No/N) = kt
Use a convenient number for No, then N will be 1/8 of that, solve for t.
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