Posted by evelyn on Monday, November 19, 2012 at 1:16pm.
5.00% w/w NaCl means 5.00 g NaCl per 100 g solution.
mols NaCl = grams/molar mass. Solve for mols NaCl.
mass soln = volume x density. Solve for volume and convert to L.
Finally, M = mols/L soln.
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