Question

The density of acetonitrile (CH3CN)is 0.786 g/mL, and the density of methanol (CH3OH)is 0.791 g/mL. A solution is made by dissolving 24.5mL (CH3OH)in 98.9mL (CH3CN). What is the mole fraction of methanol in the solution?
Use density to convert mL methanol and acetonitrile to grams.
Convert grams of each to mols.
mole fraction methanol= mols methanol/total mols.
mole fraction acetonitrile = mols acetonitrile/total mols.

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