SAT

SAT, 30.11.2021 20:30, jay555538

Radioactive uranium-235 has a half-life of about 700 million years. Suppose you find a rock and chemical analysis tells you that only 18 of the rock's original uranium-235 remains. How old is the rock?.

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Radioactive uranium-235 has a half-life of about 700 million years. Suppose you find a rock and chem...

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