The half-life of Radium-226 is 1590 years.

[From: ] [author: ] [Date: 12-03-10] [Hit: ]

The half-life of Radium-226 is 1590 years. If a sample contains 500 mg, how many mg will remain after 2000 years?

500(1/2)^(2000/1590) = 209.08 mg

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