[填空题]
Sodium azide is an ivku)m,oi a(44 c z1 vpma;zw3qo gei,tkhzr)clh;w- snkg.ky3w 36 yst3.i.,vnic compound found within the airbags of some older cars. The airbag is deployed as a safety feature i3yskkv,wgnst;.h3.lz6k egtw,c 3h -i)y.irn the event of an accident. In this application, the sodium azide 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= $g mol^{-1}$
