Объяснение:

2Ca+O2->2CaO

2Ca+O2=2CaO

2HgO->2Hg+O2

2HgO=2Hg+O2

2Ba+O2->2BaO

2Ba+O2=2BaO

2Na+Br2->2NaBr

2Na+Br2=2NaBr

2Fe+3Cl2->2FeCl3

2Fe+3Cl2=2FeCl3

N2+3H2->2NH3

N2+3H2=2NH3

4Al+3C->Al4C3

4Al+3C=Al4C3

3Mg+2P->Mg3P2

3Mg+2P=Mg3P2

4B+5O2->2B2O5

4B+5O2=2B2O5

2H2O->2H2+O2

2H2O=2H2+O2

4As+5O2->2As2O5

4As+5O2=2As2O5

2K+O2->K2O2

2K+O2=K2O2

2Cu+O2->2CuO

2Cu+O2=2CuO

H2+F2->2HF

H2+F2=2HF

2K+Cl2->2KCl

2K+Cl2=2KCl

2Fe+3Br2->2FeBr3

2Fe+3Br2=2FeBr3

2Na+H2->2NaH

2Na+H2=2NaH

4P+5O2->2P2O5

4P+5O2=2P2O5

2K+S->K2S

2K+S=K2S

4Ag+O2->2Ag2O

4Ag+O2=2Ag2O

Al+3I->AlI3

Al+3I=AlI3

C+2H2->CH4

C+2H2=CH4

4Ag+O2->2Ag2O

4Ag+O2=2Ag2O

2KClO3->2KCl+3O2

2KClO3=2KCl+3O2