anonymous
  • anonymous
What is the mole fraction of solute and the molal concentration for an aqueous solution that is 19.0% NaOH by mass?
Chemistry
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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aaronq
  • aaronq
19.0% NaOH by mass means that there is 19 g of NaOH in 100 mL of water. use the formulas for molality and mole fraction.
anonymous
  • anonymous
So, what is the Solute and what is the Solvent in this question?
aaronq
  • aaronq
NaOH is the solute water is the solvent Note: the one that is less is always the solute.

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anonymous
  • anonymous
So do I need to change the 19g and 100 mL to moles, then plug it into the equation?
aaronq
  • aaronq
for mole fraction, yes. for molality, only convert the solute to moles.
anonymous
  • anonymous
I tried all that and I still cant get the right answer. Any other hints anyone can give me?
aaronq
  • aaronq
can you post what you did?
goformit100
  • goformit100
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