Since molarity is a concentration unit used mainly by chemists, the concentrations of commercial solutions are normally measured by the percentage of solute in the solution. Household vinegar is a 5% (byvolume) solution of acetic acid and water. Assuming that thedensity of your vinegar is 1.0055 g mL-1 and the densityof acetic acid is 1.05 g mL-1, use .354 as the molarity of acetic acid to determine the volume percent of acetic acid in avinegar solution.