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November 23, 2014

Homework Help: Chemistry

Posted by Sam on Tuesday, May 10, 2011 at 9:50pm.

How many grams of KNO3 are needed to make 450 mL of a solution that is to contain 5.50 mg/mL of potassium ion?
Calculate the molarity of the solution.

______g
______M

i honestly don't know where to start, but i know that M=mol/L will be involved somewhere...

Please help...

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