Question

CaO + H2O --> Ca(OH)2
NH4NO2 --> N2 + H2O
CuO + H2--> Cu + H2O
Fe(OH)3 --> Fe2O3 + H2O
Al + Cl2 ---> AlCl3

Answer 1

CaO + H2O --> Ca(OH)2

NH4NO2 --> N2 + 2H2O

CuO + H2 --> Cu + H2O

2Fe(OH)3 --> Fe2O3 + 3H2O

2Al + 3Cl2 --> 2AlCl3