can you please answer this question. "The concentration of acetic acid in commercially available white vinegar is reported to be 5 % w/v. determine the molarity of the solution"

5% w/v means 5 g acetic acid/100 mL soln.

mols acetic acid = 5/molar mass acetic acid.
volume of soln = 0.1 L
M = mols/L soln