How many formula units/molecules are in 175.0 grams of barium acetate?

Question

Identify if the units should be formula units or molecules.

Answer 1

Because barium acetate is a salt, we should use formula units and not molecules.

Molar mass barium acetate = 255 g/mol

175 g x 1 mol / 255 g x 6.02x10²³ form.units/mol = 4.13x10²³ formula units