SOLUTION: A radioactive sample with a mass of 80mg has a half life of 3 days. How long does it take for the sample to decay to 5mg? I got this far 5=80(1/2)^t/3 not sure what to d
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Question 1167953
:
A radioactive sample with a mass of 80mg has a half life of 3 days.
How long does it take for the sample to decay to 5mg?
I got this far 5=80(1/2)^t/3
not sure what to do after this.
Answer by
ikleyn(52802)
(
Show Source
): You can
put this solution on YOUR website!
.
The mass ratio
=
=
=
. Four half-periods: 3*4 = 12 days.
This problem is for easy MENTAL solution.
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