I NEED HELP NOW I have 500 mL of a 5% concentration of vinegar.

I want to dilute the whole thing down to 2%.

How much water should I add?
M1 =

V1 =

M2 =

V2 =
M1 V1 = M2 V2
Note that you will need to subtract 500mL from the answer you get in this equation to figure out how much water to add.

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Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.