Question

Vinegar is 5% acetic acid. If the density of household vinegar is approximately 1.00 g/mL, how many grams of acetic acid are contained in 10.0 mL of vinegar?

So I started out with 10.0 mL of HC2H3O2 then multiplied by 1.00g/1mL. What do I do next? Is it done there?

Answer 1

10 mL x 1.0 g/mL = 10 g is the mass of the 10 mL.
That is 5% acetic acid; therefore,
0.05 x 10 g = 0.5 g ia acetic acid. The remainder of 9.5 g is H2O.