Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter8: Properties Of Gases
Section: Chapter Questions
Problem 8.BCP
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Transcribed Image Text:In the Dumas-bulb technique for determining the molar mass
of an unknown liquid, you vaporize the sample of a liquid that
boils below 100 °C in a boiling-water bath and determine the
mass of vapor required to fill the bulb (see drawing (Figure
1)).
Part A
unknown vapor, 1.013 g ; volume of bulb, 355 cm3 ;
From the following data, calculate the molar mass of the unknown liquid: mass
pressure, 742 torr ; temperature, 99 °C
ΑΣφ.
?
MM =
g/mol
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