In the laboratory you dissolve 19.2 g of chromium(II) sulfate in a volumetric flask and add water to a total volume of 375 . mL.

Question

What is the molarity of the solution?  M

Answer 1

M = moles of solute/L of solution.

Cr₂(SO₄)₃ = 392 g/mol

(1 mol/392 g) (19.2 g/0.375 L) = 0.131 m/L = 0.131 M