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An ancient club is found that contains 100 g of pure carbon and has an activity...

An ancient club is found that contains 100 g of pure carbon and has an activity of 6.5 decays per second. Determine its age assuming that in living trees the ratio of (14C/12C) atoms is about 1.30×10^-12. Note that the half life of carbon-14 is 5700 years and the Avogadro number is 6.02×10^23.

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