What is the mole fraction of NaOH in an aqueous solution that contains 16.9% NaOH by mass?

Answer 1

molefraction: moles of NaOH/totalmoles

Assume 1000 total grams. Then 169 grams of NaOH, figure the moles of that. Also, figure the moles of 931 grams of water.

molefraction: molesNaOH/(molewater+molesNaOH)