Homework Help: Chemistry

Posted by Lisa on Tuesday, April 29, 2008 at 2:16pm.

Calculate the molarity of a solution in which 0.75 moles of a solute are dissolved in 125g of solution (density of solution = 1.05g/mL).

I don't even know where to begin.

Chemistry - bobpursley, Tuesday, April 29, 2008 at 2:38pm
Start with the definition.

Molarity=molesSolute/volumeSolution

and VolumeSolution=masssolution/density.

You will have to change the volume from ml to Liters.
Chemistry - Lisa, Tuesday, April 29, 2008 at 3:16pm
1.05 * 1L/1000mL = 0.001 L

So, do I then go ahead and do this:

Vsolution = 125g/0.001 L ?

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