If 42.7 mL of 0.0989M sodium hydroxide solution is needed to titrate the amount of acetic acid in a 5.00 mL sample of vinegar, what is the weight/weight percent (w/w %) of acetic acid in the vinegar. (MM acetic acid = 60.04 g) Assume the density of vinegar is 1.00 g/mL. Do not include units in your answer. Use the correct number of significant figures.