February 21, 2017

Homework Help: Chemistry

Posted by Jazmin on Sunday, May 15, 2011 at 8:29pm.

K-42 has a half-life of 12.4 hours. If you begin with 250g of
K-42, determine how much you will have left after 4 half-lives.
How long does 4 half-lives take?
please help

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