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27-04-2017
Mathematics

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A radioactive element has a half-life of 10 days. If 800 g of the element are now available in a laboratory, how much will remain after 25 days?

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awaisshah101 awaisshah101

27-04-2017

Total half lives (n) = 25/10=2.5T
Ending amount= Beganing amount/2^n
= 800/2^2.5
= 141.41g

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