Chemistry, 24.02.2020 18:08 jordanjones022
Suppose you find a rock originally made of potassium-40, half of which decays into argon-40 every 1.25 billion years. You open the rock and find 7 atoms of argon-40 for every atom of potassium-40. How long ago did the rock form?
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Suppose you find a rock originally made of potassium-40, half of which decays into argon-40 every 1....
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