a solution of acetone contains of 20 ml of acetone and 480 ml of water calculate of the solution Share with your friends Share 0 Geetha answered this $Mass\%=\frac{Wtofthesolute}{Wtofthesolution}\times 100\phantom{\rule{0ex}{0ex}}Wtofthesolute=20ml\phantom{\rule{0ex}{0ex}}Wtofthesolution=480+20=500ml\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}Mass\%=\frac{20}{500}\times 100=4\%$ 0 View Full Answer Deepu John answered this Mass of solution = Mass of solvent/ Mass of solution X 100 Mass of solution = 500ml Mass of solvent (acetone) = 20ml 20/480+20 X 100 = 4% 1