Question 1
Aluminum metal reacts with aqueous iron(II) chloride to form aqueous aluminum chloride and iron metal. What is the stoichiometric coefficient for aluminum when the chemical equation is balanced using the lowest, whole-number stoichiometric coefficients?
◦ 1
◦ 2
◦ 3
◦ 4
Question 2
Automotive air bags inflate when sodium azide decomposes explosively to its constituent elements:
2 NaN
3(s) → 2 Na(s) + 3 N
2(g)
How many moles of N
2 are produced by the decomposition of 2.88 mol of sodium azide?
◦ 1.92
◦ 8.64
◦ 4.32
◦ 0.960
◦ 1.44