Answer:
67.3g
Step-by-step explanation:
%(w/w) = mass of solute/total mass of solution × 100
According to this question, an aqueous solution contains 32.7% KCl (w/w%). Firstly, we find the mass of the solute (KCl) as follows, if the mass of solution is 100g:
32.7 = mass of solute/100 × 100
mass of solute (KCl) = 32.7g
Mass of solution = mass of solvent (water) + mass of solute (KCl)
100g = x + 32.7g
x = 100 - 32.7
x = 67.3
Hence, the mass of water contained in the 100g solution is 67.3g.