How many grams of cobalt-60 will remain after three half-lives?

asked Feb 3, 2020 78.6k views

2 votes

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2 votes

Answer:

1.25

Step-by-step explanation:

After 3 half lives and 17,190 years have gone by. 1.25

Menyh answered Feb 5, 2020

by Menyh

7.6k points

2 votes

Answer:

Cobalt-60 decays, with a half-life of 5.3 years, to the element nickel-60 by the emission of a 0.32 MeV beta particle.

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