The half life of potassium 40 is approximately 1.25 billion years. An igneous rock is found to contain about 1/4 of its original mass of potassium 40. The approximate age of the rock is _____ billion years.

NocFenix asked Jun 1, 2022

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NocFenix asked Jun 1, 2022

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Answer:

2.5 billion years

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Sharadh answered Jun 6, 2022

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