An aqueous solution of ethylene glycol HOCH,CH,OH used as an automobile engine coolant is 40.0% HOCH,CH,OH by mass and has a density of 1.05 g/mL. What are the (a) molarity (6.77M), (b) molality (10.74m), and (c) mole fraction (0.162) of HOCH,CH,OH in this solution?​