120406Molecular Mass by the Method of Dumas Lab

# 120406Molecular Mass by the Method of Dumas Lab - At 20...

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Molecular Mass by the Method of Dumas CH 141 Laura Dunn 12/5/06 Section 101

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Purpose : To determine the density of an unknown substance using a rewritten form of the Ideal Gas Law. Procedure : Refer to lab text. Data : 1. flask + air = 182.4752 g 2. flask + gas (vapor) = 183.1072 g 3. flask + water (20 degrees C) = 483.73 g Pressure: 755.4 mm Hg = 0.994 atm 760 mm Hg Temperature: Flask sealed at 68 degrees C 341 K At 20 degrees C density of water = 0.9982 g/ml
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Unformatted text preview: At 20 degrees C density of air = 1.2 g/L Mass water = 259.9 g unknown #15 Calculations : Results: I obtained a molecular mass of 102.287 g/mol for my Unknown #15. My experiment went well and I produced a vacuum at the end, as intended. The goal of this experiment to determine the density of an unknown substance using a rewritten form of the Ideal Gas Law was achieved without any problems....
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120406Molecular Mass by the Method of Dumas Lab - At 20...

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