How long ago was plant alive

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Every radioactive isotope decays at a certain rate. It is never known when a given nucleus will decay, but if many nuclei are gathered together, as a group they will decay at a measurable and consistent rate. A radioactive half-life is the time it will take for half of the nuclei to decay.

Carbon-14 has a half-life of 5730 years. In a plant fossil, you find that the 14 Carbon has decayed to 1/32.0 of the original amount. How long ago was this plant alive?

Reference no: EM133228894

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