Posted by Samantha on Saturday, October 9, 2010 at 1:53am.
%KCl w/w (or m/m) means grams KCl/100 g solution. You have g KCl in the problem. Convert 178 mL solution to grams.
mass = volume x density
mass = 178 mL x 1.11 g/mL = g soln.
Then %KCl = (grams KCl/g soln)*100 = ??
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