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August 30, 2015

Homework Help: physical science

Posted by cheryl on Wednesday, November 2, 2011 at 10:08pm.

A certain radioactive substance has a half-life of 1 hour. If you start with 1 gram of the material at noon, how much will be left at 3:00 P.M.? At 6:00 P.M.? At 10:00 P.M.?

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