Posted by Tim on Thursday, December 2, 2010 at 10:18pm.
A 15.0% NaCl solution means 15.0 g NaCl in 100 g solution. You want 2.50 moles NaCl.
1 mole NaCl is 58.44 grams so 2.50 moles = 2.50 x 58.44 = ?? grams (about 145 g or so) but you need to do it more accurately.
So you want to take 100 g soln x (145/15.0) = ??
Check my thinking.
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