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