natalieraudet natalieraudet

23-03-2020
Chemistry

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If 50% of a radioactive element remains after 4000 years, what is the half-life?

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Mistystar4881 Mistystar4881

27-03-2020

Hey there!

A half-life means after a certain amount of time, half of that substance will be gone/changed after that time.

If 50%, or half, of the element remains after 4000 years, that means the half life must be 4000 years.

Hope this helps!

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