Chem 2/5 Pre-Laboratory Assignment
Fall 1996

Experiment #423-Determining the Empirical Formula of a Compound

1.) How should one fight a fire caused by igniting magnesium metal?
(This can be found on the MSDS sheet for magnesium on the chem 2 webpage via
http://www.umr.edu/~tbone/.)







2.) What compound are you determining the empirical formula of?



3.) Should the bottom of the crucible in this experiment be placed in the yellow part of the flame?
Why or why not?







4.) About how much magnesium ribbon should be placed in the preweighed crucible?




5.) Should you weigh the contents of the crucible after it has just been removed from the flame?
Why or why not?