The liquid used in automobile cooling systems is prepared by dissolving ethylene glycol (HOCH₂CH₂OH) in water. Ethylene glycol has a molar mass of 62.07 g/mol and a density of 1.115 g/mL at 50.0C.

Calculate the vapor pressure at 50C of a coolant solution that is 53.0:47.0 ethylene glycol-to-water by volume. At 50.0C, the density of water is 0.9880 g/mL, and its vapor pressure is 92 torr. The vapor pressure of ethylene glycol is less than 1 torr at 50.0C.

________torr