Designing a better airbag requires more than just optimizing the chemistry.
The mass of the bag itself and the method in which the chemicals are mixed can also contribute to the overall efficiency of the airbag.
The best airbag would be one with the highest volume to mass ratio. Also remember that a good airbag doesn't deploy until you need it!
Examine the mechanical optimizations below and be sure to predict beforehand how you think each will change the results. Record these predictions in your lab notebook.