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.         University of Wisconsin …showed first 75 words of 1872 total…

…showed last 75 words of 1872 total…included in it. We apparently have got some of the "cheap" propane. If we assume that natural gas is the other component, we can then determine how much really is propane and how much is natural gas. By doing a proportional calculation. We determined that 36% of the propane was actually methane, and 64% was really propane. To calculate this we needed to use the molar mass of propane as well as methane to do the conversion.