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August 28, 2014

Homework Help: Chemistry

Posted by Jon on Friday, March 26, 2010 at 5:29pm.

A solution is made by dissolving 0.100 mol of NaCl in 5.35 mol of water. What is the mass % of NaCl?

So far, I have determined molecular weight of NaCl (58.44 g/mol) multiplied by 0.100 mol = 5.844g NaCl, and mw of H2O (18 g/mol) = 96g H20.
I thought mass solute/mass solution (5.8/102 = .057 or 5.7%) but my homework program says incorrect. Am I doing this problem wrong?

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