Gas Behavior Lab Chem151Sum1

# Gas Behavior Lab Chem151Sum1 - the lab room According to...

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Gas Behavior Lab Author: Miyoung Chung Instructor: Jared Boulds Chemistry 151, Section 003 Date Work Performed: June 15, 2009 Date Work Submitted: June 17, 2009 Abstract

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Chung 2 Introduction Gases have many properties that allow us to identify and classify them. Among properties such as color and boiling point, a molar mass are unique to certain gases and is a very effective method of identifying pure substances. Most gases behave similarly, so to help us identify unknown gases, we will be using the gas law which states that pressure, volume, and temperature, and the number of molecules of a gas are all mutually dependent 1 . Stated as an equation, the relationship becomes PV=nRT (Equation 1) 1 . Using a barometer, we measured the pressure of the lab. Using a stopper with a capillary tube on a flask, we equalized the pressure in the flask as we evaporated the gases. This made the pressure in the flask equal to the pressure of
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Unformatted text preview: the lab room. According to perfect gas laws, all gases should react under the circumstances stated in Equation 1. Since we can account for Pressure, Volume, Temperature, and the ideal gas constant, we can solve for the number of particles in the gas and divide it by the weight of the gas which will tell us the molecular weight, thus allowing us to identify the unknown gas 1 . Results Table #1 Measurements for Unknown Gas (A1) Mass of Flask With Stopper (g) Mass of Flask With Stopper With Gas (g) Temperature of Evaporation (Celsius) Volume of Flask (mL) Trial 1 105.760 106.189 90.1 140.11 Trial 2 105.769 106.218 89.0 140.12 Trial 3 105.799 106.214 89.9 140.12 Average 105.776 106.207 89.67 140.12 STDEV 0.02042 0.01572 0.59 0.00577 Calculations-Pressure Pressure of the lab room is 920mbar. (1013 mbar = 1 atm)...
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Gas Behavior Lab Chem151Sum1 - the lab room According to...

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