A vinegar sample is found to have a density of 1.006 and to contain 4.7 acetic acid by mass.How many grams of acetic acid are present in 3.00 of this vinegar?

Answer 1

1.006 what?
4.7 what?
3.00 what?

Answer 2

1.006 g/ml
4.7% acetic acid by mass
3.00L

Answer 3

4.70% by mass means 4.70 g/100 g solution.
Use density to convert 100 g solution to mL. That's about 99.4 cc; therefore you have 4.70 g acetic acid in 99.4 cc.
Convert that to g acetic acid in 3000 cc.
4.70 g x (3000/99.4) = ?