Answer to Question #269360 in General Chemistry for leo

Question

Some ethylene glycol, HOCH2CH2OH, is added to your car’s cooling system along with 5.0

kg of water. If the freezing point of the water–glycol solution is −15.0 °C, what mass of

HOCH2CH2OH must have been added?

Answer 1

∆T_f=K_f×m

0-(-15) =1.86×m

M=15/1.86

M=8.065