Mathematics, 13.12.2019 10:31 savannahwonder

If the half-life of a unstable isotope is 10,00 years and only 1/8 of the radioactive parent remains how old is the sample? a.10,000 b. 20,000 c. 30,000 d. 40,000

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If the half-life of a unstable isotope is 10,00 years and only 1/8 of the radioactive parent remains...

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