Mathematics, 09.01.2020 10:31 Tabbicat021

Ifound a rock that contains 1g of radioactive radium (half-life = 1600 years). i measure that 15g is no longer radioactive. how old is my rock?

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Ifound a rock that contains 1g of radioactive radium (half-life = 1600 years). i measure that 15g is...

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