Ответ:

2Zn + O2= 2ZnO

2Fe + 3Cl2= 2FeCl3

Mg + 2HCl= MgCl2 + H2

2Al (OH)3 = Al2O3+ 3H2O

4HNO3= 2H2O +4 NO2 + O2

CaO + H2O= Ca(OH)2

H2 + Cl2 = 2HCl

4KClO3=3 KClO4+ KCl

4Fe(OH)2 +2 H2O + O2 = 4Fe(OH)3

2KBr+ Cl2= 2KCl + Br2