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April 19, 2014

Homework Help: chem

Posted by lily on Friday, July 22, 2011 at 7:29pm.

an aq. solution(NaCl) made by using 133g diluted to a total solution volume of 1 L.Calculate the molarity, molality & mass % of the solution(density of solution = 1.08g/mL)
[ans: M=1.92M, m=2.0m, 10.4 %]
i need the calculation work bcus my ans is contradict from the real ans.

~for M i got 2.28M
my calculation: M=2.28/1
but the ans is 1.92M.
~for m i got same with the ans.
~for the mass% i got 12.31%
my calculation: mass%=133/1080x100%
but the ans is 10.4%

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