Question

Составьте уравнение реакций по схемам H2O -----1-----> O2----2---> al2O3
H2O -----1----->O2-----2----->CuO
CH4------1---->CO2-----2----->O2

Answer 1

2H₂O  = 2H₂ + O₂
4Al + 3O₂ = 2Al₂O₃ 
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2H₂O  = 2H₂ + O₂
2Cu + O₂ = 2CuO 
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CH₄ + 2O₂ = 2H₂O + CO₂
2CO₂ = 2CO + O₂