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Mole Fraction (X) relates the moles of solute and solvent within a solution:
Assuming that we have 100 g:
Calculate the mole fractions of methanol, CH3OH; ethanol, C2H5OH; and water in a solution that is 40% methanol, 40% ethanol, and 20% water by mass. (Assume the data are good to two significant figures.)
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