Answer:
It contains 75g of acetic acid.
Explanation:
With the percent mass (15%) and the mass of the solution of vinegar, we can calculate the amount of acetic acid, using the percent by mass formula:
[tex]\begin{gathered} PercentByMass=\frac{MassOfSolute}{MassOfSolution}*100\% \\ 15\%=\frac{MassOfSolute}{500g}\times100\operatorname{\%} \\ \frac{15\%}{100\operatorname{\%}}*500g=MassOfSolute \\ 75g=MassOfSolute \\ \end{gathered}[/tex]So, it contains 75g of acetic acid.
