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1. Express the concentration of a 0.0220 M aqueous solution of fluoride, F-, in mass percentage and in parts per million. Assume the density of the solution is 1.00 g/mL. ? % ? ppm 2. A solution is made by dissolving 0.679 mol of nonelectrolyte solute in 871 g of benzene. Calculate the freezing point and boiling point of the solution. Kf benzene = 5.12 C/m Kb = 2.53 C/m

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