Posted by Bob on Saturday, February 28, 2009 at 9:35pm.
Why did you shift to liters as the unit of volume. I would have used ml as the volume unit, I suspect that is what the problem intended (but did not say so).
Aren't you looking for the molarity in this equation. If so, the molarity equation is M = moles of solute / Liters of Solution
You didn't follow the instructions and I don't see that you used MxV= MxV
?? mL x 0.500 M = 500 mL x 0.250 M
?? mL = 500 x 0.250/0.500 = 250 mL.
No, you aren't looking for the molarity. You have molarity of solution 1 and you have molarity of solution 2. You are looking for volume (and you solved for that and obtained 0.250 L which is the same as 250 mL). So I would round my answer to 250 mL.
Alright, I see my error. I appreciate the help :)
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