jeremiahphillip8959 jeremiahphillip8959

15-04-2022
Chemistry

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A 60-g sample of radioactive isotope is measured after two half-lives have passed. What pair of percentages describes the sample after two half-lives?.

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jsimpson11000 jsimpson11000

26-04-2022

Answer:

25% is left 15 gm

Explanation:

(1/2)^2 = 25%

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