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Topic: HALF LIFE  (Read 3046 times)

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Offline ericbmd

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HALF LIFE
« on: August 08, 2006, 09:08:52 AM »
Copper-64 is used in the form of copper acetate to study brain tumors.   It has a half life of 12.8hr.  If you begin with 15.0 mg of labeled copper acetate, what mass in milligrams remains after 64 hr. 
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Offline sdekivit

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Re: HALF LIFE
« Reply #1 on: August 08, 2006, 10:44:13 AM »
use N(t) = N(0)(1/2)(t/t0,5) and use the number of Avogadro to calculate the amount of copper particles at t = 0 (15 mg)
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