07-01-2021
Geography

contestada

Ifa rock had 80 radioactive atoms in it when it was formed and it now has 20 radioactive elements in it, how old is the rock?

Respuesta :

Cieracauthen Cieracauthen

07-01-2021

Answer:

100, it is 100 years old

Explanation:

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donavanperez13 donavanperez13

07-01-2021

Answer:

10 million years

Explanation:

Answer Link

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