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August 23, 2014

Homework Help: College Chemistry

Posted by Kev on Thursday, March 29, 2012 at 7:58pm.

A stock solution is prepared by adding 20mL of 0.2M Na3PO4 to enough water to make 80mL. What is the Na+ concentration of 20mL of the stock solution?

I am thinking .012:
a) .02 times .2 = .004
b).004 times 3 = .012 (for each Na in the molecule)

Seems too simple

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