Chemical Forums
Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: angel68 on February 10, 2008, 05:25:35 PM
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density of 1.24g/mL and is 9.14M. Calculate the % by mass in solution. (MW is 63.02g/mL)?
mass solute
------------- x 100 = mass percent
mass solution
(1.24g/mL)(1000mL) = 1.24 x 10^3g --> mass solution
M=mole solute
------------
L solution
I'm having trouble with next step.... Do I use the 9.14M to help get the mass of solute or do I use the MW?
Thanks for your help
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http://www.chembuddy.com/?left=concentration&right=percentage-to-molarity
You will just have to do the reverse.
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http://www.chembuddy.com/?left=concentration&right=percentage-to-molarity
You will just have to do the reverse.
I'm sorry the reverse of M??? :'(
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No, you have to use the same approach to find out formula for molarity to percentage conversion.
Or - to make things much faster - don't derive everything, just solve final formula for percent concentration.
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No, you have to use the same approach to find out formula for molarity to percentage conversion.
Or - to make things much faster - don't derive everything, just solve final formula for percent concentration.
Thanks so much!!! I appreciate your help. ;D