Saturday
February 28, 2015

Homework Help: Chemistry

Posted by chloe on Tuesday, August 31, 2010 at 6:34pm.

I have a 2.5g sample in 12.5ml solution.I'm supposed to do a spike into this solution with the sample.If my standard concentration is 2000ppm, how much of this solution should I use such that I get 200ppm spike in sample?

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