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Personal Profile - PURPOSE In this particular laboratory...

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PURPOSE : In this particular laboratory experiment, we are going to determine the molar mass of an unknown gas, from the gas density. We are also going to use gas density, along with the kinetic molecular theory, to explain the behavior of gas filled balloons. Finally, we are going to demonstrate the effects of temperature and pressure changes of gasses. PROCEDURE : We are using the experimental procedure as described in our laboratory manual. m University of Wisconsin - River Falls Laboratory Manual Chemistry 116 C Experiment 116-8 Molar Mass From Gas Densities P There are no changes to this laboratory or from the indicated laboratory procedure. MATERIALS and APPARATUS : M Part A-1: In this part of the experiment, we are going to observe three balloons filled each with one of three different gasses. So as part of our materials we need to have three balloons as well as the three gasses. These balloons were already prepared for us and we kept underneath the fume hood for observation. o Helium Sulfur Exofluoride He SF6 4.002602 g. 146.06 g. Laboratory Stock Laboratory Stock L Ammonia NH3 17.031 g. Laboratory Stock L Part A-2-5c: During this part of the experiment, our materials and equipment consisted of one, clean, dry, 500mL plastic bottle with an airtight cover. Along with the bottle we need an electronic balance, a thermometer set up to measure the air temperature, as well as a barometer with a chart on how to interpret the readings. Finally we must have the six different gasses with which to do our experiment. t Distilled Water Helium H2O He 33.00674 g. 4.002602 g. Laboratory Stock Laboratory Stock L Oxygen Argon O2 Ar 31.9988 g. 39.948 g. Laboratory Stock Laboratory Stock L
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Carbon Dioxide Propane CO2 CH3CH2CH3 44.0098 g. 44.09652 g. Laboratory Stock Laboratory Stock L Natural Gas CH4 16.04276 g. Laboratory Stock Part A-6: In this particular part of the experiment we made two different balloons. Therefore we need the balloons themselves, as well as the two different gasses that are going to go into the balloons. One of the balloons needed to be filled with Helium and then the other one with Carbon Dioxide. Then the balloons were to be taken back to our place of residence for observation. w Helium Carbon Dioxide He CO2 4.002602 g. 44.0098 g. Laboratory Stock Laboratory Stock Part B-1: For this part of the experiment we needed a balloon filled with air. We also tried this part of the experiment when the balloon was filled with two other gasses. A total of three more balloons will be needed for this lab then.
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This note was uploaded on 01/09/2011 for the course EDS 103 taught by Professor White during the Spring '10 term at E. Kentucky.

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Personal Profile - PURPOSE In this particular laboratory...

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