February 22, 2017

Homework Help: Chemistry

Posted by Mindy on Friday, November 11, 2011 at 6:47pm.

The half-life for beta decay of strontium-90 is 28.8 years. A milk sample is found to contain 10.3 ppm strontium-90. How many years would pass before the strontium-90 concentration would drop to 1.0 ppm?

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