An Unknown Liquid Is Vaporized in a 273-ML Flask by Immersion

question 34

Multiple Choice

An unknown liquid is vaporized in a 273-mL flask by immersion in a water bath at 99°C. The barometric pressure is 753 torr. If the mass of the vapor retained in the flask is 1.362 g, what is its molar mass?

• A)20.4 g/mol
• B)40.9 g/mol
• C)112 g/mol
• D)154 g/mol
• E)184 g/mol

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