Calculate the mole fraction of MgCl₂ in an aqueous solution prepared by dissolving 0.400 moles of MgCl₂ in 850.0 g of water. A) 0.00841 B) 0.0270 C) 0.00900 D) 0.0252 E) 0.0167

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Quizplus · Accepted Answer

The mole fraction of MgCl2 is calculated by dividing the moles of MgCl2 by the total moles of solute and solvent. The moles of water can be calculated by dividing the mass of water by its molar mass.Moles of MgCl2 = 0.400 molesMass of water = 850.0 gMolar mass of water = 18.015 g/molMoles of water = 850.0 g / 18.015 g/mol = 47.17 molesTotal moles of solute and solvent = 0.400 moles + 47.17 moles = 47.57 molesMole fraction of MgCl2 = 0.400 moles / 47.57 moles = 0.00841

Calculate the Mole Fraction of MgCl2 in an Aqueous Solution

Calculate the Mole Fraction of MgCl₂ in an Aqueous Solution