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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Definitions:

Median

The middle value in a set of numbers, which separates the higher half from the lower half.

Standard Deviation

A statistical metric that quantifies the spread or variability of a dataset, highlighting how far individual measurements deviate from the dataset's mean on average.

Mean

The average of a set of numerical values, calculated by adding them together and dividing by the number of values.

Median

A measure of central tendency in statistics that represents the middle value in a sorted list of numbers.