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January 27, 2015

January 27, 2015

Posted by **David** on Tuesday, December 11, 2012 at 11:22pm.

- Chemistry -
**DrBob222**, Tuesday, December 11, 2012 at 11:36pmSee your other radioisotope problem. Most of these follow the same procedure; this one is a little different but uses the same formulas. Post with explanation if you can't get it.

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