Complete the following reactions:
( C_{2} H_{4}+O_{2} rightarrow )
( 4 A l+3 O_{2} rightarrow )

( (1) c_{2}+H_{4}+30_{2} rightarrow 2 CO_{2}+2H_{2}0)
( (2) quad 4 A 1+30_{2} longrightarrow 2A1_{2}0_{3} )