benjamin8 benjamin8

03-11-2017
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After two half-lives how much of the original isotope

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nahitzKaelin nahitzKaelin

03-11-2017

Ou of these options 50% 25 % 6.25% 2% 0.39%. The answer is 25%

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princess214 princess214

05-11-2017

I think answer would be 25%

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