rileypaige rileypaige

10-04-2017
Chemistry

contestada

a rock from the moon contains 12.5 percent of the potassium-40 it began with. how old is the rock

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arahim894 arahim894

10-04-2017

1.25 billion years ago,2.5 billion years ago, 3.75 years ago,and 5 billion years ago.

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anayaaguiar009 anayaaguiar009

01-07-2021

Answer:

3.9 billion years old, this is late but hope it helps someone!

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