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15-05-2018
Chemistry

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A radioactive sample is 555 years old. It’s half life is 111 years. How many half lives?

Respuesta :

24-05-2018

Given: Age of sample = 555
Half life = 111

So, number of half life = [tex] \frac{\text{Age of sample}}{\text{half life}} [/tex]
= [tex] \frac{555}{111} [/tex]
= 5

Thus, number of half life of radioactive sample is 5

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