A stock solution is made by dissolving 66.05 g of (NH₄)₂SO₄ in enough water to make 250 mL the concentration of the new solution? sample of this solution is then diluted to 50.0 mL. Given that the molar mass of (NH₄)₂SO₄ is 13 Use MᵢVᵢ = MfVf and molarity = moles of solute/liters of solution .
A. 0.400 M
B. 1.60 M
C. 5.00 M
D. 10.0 M