[填空题]
Sodium azide is an io(,(hn1ut uou m5b8jp bnic p) xf-fp 2bm7 z:c1yaqcompound found within the airbags of some older cars. The airbag is deployed as a safety feature in the event of an accident. In this application, the sodium azifp b-pqa2)xym 17fcz :de decomposes rapidly, and the gas formed inflates the airbag.
The decomposition of sodium azide under these conditions is given below.
$2NaN_{3(s)}\rightarrow2Na (s)+3 N_{2(g)}$
1.Suggest the formula and charge for the azide ion.
2.A typical airbag requires $65.0dm^3$of nitrogen gas for complete inflation at STP. Using section 2 of the data booklet, calculate the mass of sodium azide that the airbag must contain for this purpose.Molar mass for sodium azide calculated= $g mol^{-1}$
