PURPOSE : Â Â Â Â Â Â Â Â In this particular laboratory experiment, we ar freeing to restrain 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 : Â Â Â Â Â Â Â Â We are using the data-based procedure as described in our laboratory manual.
        University of Wisconsin - River Falls
        research laboratory Manual
        Chemistry 116
                                Experiment 116-8
                                Molar Mass From Gas Densities
                                Pages 81 & 82
        There are no changes to this laboratory or from the indicated laboratory procedure.
MATERIALS and APPARATUS : Â Â Â Â Â Â Â Â
        Part A-1: In this part of the experiment, we are going to observe lead balloons filled each with single of three different gasses. So as part of our materials we deprivation to have three balloons as nearly as the three gasses. These balloons were already prepared for us and we kept underneath the experience hood for observation.
                Helium                                 Sulfur Exofluoride
                He                                 SF6
                4.002602 g.                         146.06 g.
                Laboratory crinkle                         Laboratory Stock
               Â
                Ammonia
                NH3
                17.031 g.
                Laboratory Stock
        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 determine the readings. Finally we must have the six different gasses with which to do our experiment.
       Â
               Â
                Distilled Water                         Helium
                H2O         ...
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