Air bags are actived when a servere impact causes a steel ball to compress a spring and electrically ignite a detonator cap. This causes sodium azide (NaN3) to decompose explosively according to the following reaction:
2NaN3=2Na(s)+3N2(g)
what mass of NaN3(s) must be reacted to inflate an air bag to 70.0L at 0C and 1.00atm??