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21-09-2021
Chemistry

contestada

lodine-131, a radioactive isotope of iodine, has a half-life of 8 days. After 40 days, if 1.5 g of lodine-131 still remains, what is the original amount of iodine-131?

Respuesta :

01-10-2021

Answer:

48g

Explanation:

5 half-lives have passed. Therefore the amount was 32 times the current amount.

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