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August 2, 2015

Homework Help: Chemistry

Posted by Katie on Sunday, March 8, 2009 at 3:27pm.

A student must make 500 mL of a 1.5 M HCl solution. The student has plenty of water and a stock solution of 6.0 M HCl to use. What volume of the 6.0 M HCl solution must be added to what volume of water to make the desired 500 mL of 1.5 M solution?

I don't really know how to start this. I've tried a couple of ways. I got that you need .75 moles of HCl and therefore you need .125 L of the 6.0 M solution, but I don't really think that that's correct and if it is I don't know what to do to find what volume of water you would need.

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