16. A 40% by volume solution of ethylene glycol in water can be used as an antifreeze. What volume of ethylene glycol must be used to prepare 5 liters of this solution? 17. Alcohol 100 proof has the following composition: X water = 0.765 and X ethanol = 0.235. (Mm water =18.0 g/mol, Mm ethanol = 46.1 g/mol,). Determine the % by mass of water and ethanol.