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if they give u 0.5246 g of a compound dissolved in 10.0012 g of acid, and u find the molality to be 0.4307 (mol/kg)
how do u solve for the molecular mass???????
im stuck, i am attempting this, so dont think im asking u to do my homework...

2006-12-12 12:19:27 · 2 answers · asked by Anonymous in Science & Mathematics Chemistry

2 answers

??? How did you find the molality (m) if you have the mass but not the molecular weight (MW)?

mole=mass/MW
m = mole solute /Kg solvent =>
m= mass (solute) / (MWsolute* Kg solvent) =>

MW = mass (solute) / (m*Kg solvent) =>
MW= 0.5246 / (0.4307*10.0012*10^-3) = 121.8 g/mole

2006-12-12 22:24:41 · answer #1 · answered by bellerophon 6 · 0 0

well, sumtimez the molar can have a mass of mess stuck init from too much food,so brush dem molalitys after each meal

2006-12-12 12:24:32 · answer #2 · answered by Daddy 6 · 0 1

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