Posted by What? on Tuesday, December 4, 2012 at 8:30pm.
4.1% w/w sucrose means 4.1 g sucrose per 100 g solution. [The 100 g solution will be made up of 4.1g sucrose + 95.9 g H2O but that isn't needed to weork the problem.]
100 g soln x (12g/4.1g) = ? g soln.
There is another way to do it; some students prefer this method. Just plug into the % equation.
% = (mass solute/g solution)*100 = ?
4.1 = (12/x) and solve for x.
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