07-01-2021
Geography

contestada

How many half-lives did the rock go through? 4. If a rock had 40 daughter atoms present, how old would the rock be?

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malaniyajoy101 malaniyajoy101

07-01-2021

160 I would say hope this helped

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Аноним Аноним

09-01-2021

160 should be the right answer

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