Calculate the vapor pressure in a sealed flask containing 55.0 g of ethylene glycol, C2H6O2, dissolved in 155 g of water at 25.0°C. The vapor pressure of pure water at 25.0°C is 23.8 torr.

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The molar mass of a substance is defined as the mass of 1 mol of that substance, expressed in grams per mole, and is equal to the mass of 6.022 × 10 23 atoms, molecules, or formula units of that substance.

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