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A radioactive substance has a half- life of 3 min. After 3 in minutes, the amount of radioactive material remain was 0.25g. How much amount of radioactive material was present in the sample initially?

A radioactive substance has a half- life of 3 min. After 3 in minutes, the
amount of radioactive material remain was 0.25g. How much amount of radioactive material
was present in the sample initially?

Grade:12th pass

1 Answers

Gaurav
27 Points
one month ago
Given, half life of radioactive element is 3 min.
& Also given that after 3 min. It was 0.25gm 
So, initially amount is= 2×0.25=0.50gm

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