Question

3a. What is the molality of a solution prepared by dissolving 22.78 g of copper (I) sulfate in 435.2 g of water?

Report your answer to THREE significant figures.

3b.

Calculate the mole fraction of compound C (ℳ = 132.0890 g/mol) in a solution prepared from 291 g of compound C and 101 g of compound B (ℳ = 272.2190 g/mol).

Report your answer to THREE significant figures.

3c.

Calculate the percent mass of sodium hypochlorite in a solution prepared from 31.3 g of sodium hypochlorite and 686 mL of water. The density of water is ρ = 0.99823 g/mL.

Report your answer to THREE significant figures.

3d.

Calculate the molality of a 1.388 M aqueous solution of manganese (II) chloride with a density, ρ = 1.019 g/mL.

Report your answer to THREE significant figures.

3e.

Calculate the molality of a 13.7% by mass aqueous solution of potassium nitrate with a density, ρ = 1.046 g/mL.

Report your answer to THREE significant figures.

Answer 1