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1. The mole fraction of an aqueous solution of lithium sulfate is 0.297. Calculate the molarity (in mol/L) of the lithium sulfate solution, if the density of the solution is 1.39 g mL-1.
2. Determine the mole fraction of potassium permanganate in a 6.65 M aqueous solution of potassium permanganate. The density of the solution is 1.39 g mL-1.
The mole fraction of an aqueous solution of magnesium sulfite is 0.29. Calculate the molarity (in mol/L) of the magnesium sulfite solution, if the density of the solution is 1.38 g mL-1.
Determine the mole fraction of magnesium bromide in a 5.51 M aqueous solution of magnesium bromide. The density of the solution is 1.17 g mL-1.