Express the concentration of solutions in molality and molarity.

Why is it better to use molality in laboratory experiments than molarity?

Calculate the molarity of a 2 L solution prepared by dissolving 15 moles of glucose in enough water.

Calculate the molality of a solution prepared by dissolving 8 moles of rock salt in 20 kg of water.

Calculate the amount of sodium phosphate (Na3PO4), in moles, to be added to 30 kg water to form a 2.5 molal solution of aqueous Na3PO4.

Calculate the amount of potassium acetate (KCH3COO), in moles, to be added to enough water to produce 0.250 L of a 1.5 molar solution of aqueous KCH3COO.

Calculate the amount of benzoic acid (C6H5COOH, MM = 122.12 g/mol), in grams, needed to produce 500 mL of a 2.5 M solution of aqueous C6H5COOH.

Calculate the amount of potassium hydrogen phthalate (C8H5KO4, MM = 204.22 g/mol), in grams, needed to be dissolved in 500 g of water to produce a 1.5 m solution of aqueous C8H5KO4.

How will you convert molarity to molality? What conversion factor (or factors) do you need?