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August 30, 2014

Homework Help: Physics

Posted by Judy on Saturday, November 17, 2007 at 12:41pm.

A certian radioactive isotope has a half-life of 1 hour. If you start with 1 gram of the material at noon, how much of the original isotope will the sample contain at 3 pm? At 6 pm? At 10 pm?

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