1. Quiz #3 – % composition, EF & MF
Chemical analysis indicates that a compound is 28.64% sulfur and 71.36% bromine. The molar mass of the compound is g/mol. Determine the molecular formula of the compound.

2. Quiz #4 – determine the molecular formula
The molar mass of a compound is g/mol. Its percentage composition is 48.63% carbon, 21.59% oxygen, 18.90% nitrogen, and the rest hydrogen.
Find the empirical formula for the compound.
Find its molecular formula.

3. Quiz #5 -
An automobile airbag is inflated with nitrogen produced from the decomposition of sodium azide, NaN3. The mass of nitrogen in a fully inflated airbag is 87.5g. What mass of sodium azide is required to produce the mass of nitrogen?

4. Quiz #6
Bubbling chlorine gas through a solution of potassium iodide results in the formation of elemental iodine.
Classify the type of chemical reaction
What mass of iodine can be produced from 1.5kg of chlorine?