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## Homework Statement

2.8 g of NaCH

_{3}COO is dissolved into an unknown volume. The resulting concentration produced is 4.3 * 10

^{-2}M, what volume of water was used?

## Homework Equations

c = n/V

## The Attempt at a Solution

I[/B] calculated molar mass of the NaCH

_{3}COO as 82.0 g/mol, which is 0.034 mol. I then used the c = n/V equation.

4.3 * 10

^{-2}M = 0.034 mol / V

V = 0.79 L

Where I am confused now is if that is the volume of the solution, or of the water? I think it's the volume of solution, and am not sure how to calculate the water.