# Chemistry

what is the mole fraction of solute molality concertration for an aqueous solution that is 19% NaOH by mass?

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1. assume 1000kg solvent

then .19(1000+M)=M

solve for M, mass of solute.
Now, molality= molessolute/1kg

I assume you know how to calculate moles solute of NaOH

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