配平下列的各个化学反应的方程式
______CH4+______O2______CO2+______H2O
______C2H5OH+______O2 ______CO2______H2O
______C2H2+______O2 ______CO2+______H2O
______Al+______CuSO4=______Al2(SO4)3+______Cu
______Al+______H2SO4=______Al2(SO4)3+______H2↑
______Al2O3+______H2SO4=______Al2(SO4)3+______H2O
______CO+______Fe3O4 ______Fe+______CO2.