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A source contains two phosphorous radionuclides

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asked Jan 11, 2018 in Physics by sforrest072 (157,439 points) ● 63 ● 451 ● 1297
edited Mar 6, 2018 by Vikash Kumar

A source contains two phosphorous radionuclides 3215P (T1/2 = 14.3d) and 3315P(T1/2 = 25.3d). Initially, 10% of the decays come from 3515 P. How long one must wait until 90% do so?

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answered Jan 11, 2018 by mdsamim (213,225 points) ● 5 ● 10 ● 23
selected Jan 11, 2018 by sforrest072
 
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Hence, it will take about 208.5 days for 90% decay of

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asked Jan 11, 2018 in Physics by sforrest072 (157,439 points)

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