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The partial molar volumes of water and ethanol in a solution with xH2O = 0.45 at 25 ?C are 17.0 and 57.5 cm3 mol?1, respectively. Calculate the volume change upon mixing sufficient ethanol with 8.85mol of water to give this concentration. The densities of water and ethanol are 0.997 and 0.7893 g cm?3, respectively, at this temperature.

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