Question

What is the molality of a solution containing 11.1 g Na2SO4 dissolved in 2269.2 g of water?

Answer 1

Didn't I do one just like this for you.

Answer 2

m = mols solute/kg solvent

Answer 3

so it would be 11.1 divided by 2269.2 times 100?

Answer 4

No. m = mols solute/kg solvent. molsl Na2SO4 is not 11.1. The problem lists that as grams. and 2269.2 is not kg. I didn't write 100 anywhere in my instructions. You're not thinking straight.

Answer 5

so 1 divided by 2.2692

Answer 6

Yes, that is kg solvent. Now convert 11.1 g Na2SO4 to mols. mols = grams/molar mass = ?

Answer 7

is that .44068?

Answer 8

No. What's the molar mass of Na2SO4?

Answer 9

oh 142.04

Answer 10

ok. Now what is 11.1 grams Na2SO4 converted to mols?