Sodium azide, a compound containing only sodium (Na) and Nitrogen (N), is used as a propellant for inflating airbags in some automobiles. A sample of sodium azide was weighed into a crucible. The crucible was covered and heated until only Na remained. The crucible was then cooled and reweighed. The following data were collected.
mass of crucible and cover,g is 28.887
mass of crucible, cover, and sodium azide,g is 30.354
mass of crucible, cover, and Na, g is 29.406
1) Determine the empirical formula of sodium azide.
2) Write the chemical equation for the formation of Na and N2 from sodium azide.