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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: Buhrock on July 04, 2012, 02:48:58 PM

Title: Finding Molality
Post by: Buhrock on July 04, 2012, 02:48:58 PM

A solution of salt(molar mass 90g mol^-1) in water has a density of 1.29 g/mL. The concentration of the salt is 35% by mass.

I need to calculate the molality.

So m = mol solute/ kg solvent

Do I start by doing:

35 g * 1 mol/ 90g = .39 mol   ??

Title: Re: Finding Molality
Post by: Borek on July 04, 2012, 04:15:59 PM

Start with 1L of the solution.