Question 1
Automotive air bags inflate when sodium azide decomposes explosively to its constituent elements:
2NaN
3(
s) → 2Na(
s) + 3N
2(
g)
How many moles of N
2 are produced by the decomposition of 2.54 mol of sodium azide?
◦ 1.27
◦ 0.847
◦ 1.69
◦ 3.81
◦ 7.62
Question 2
Lithium and nitrogen react to produce lithium nitride:
6Li(
s) + N
2(
g) → 2Li
3N(
s)
How many moles of N
2 are needed to react with 0.400 mol of lithium?
◦ 0.133
◦ 2.40
◦ 0.0667
◦ 0.400
◦ 1.2