Question

Egalează :
K+O2 -->K2O
Mg+O2-->MgO
Al+O2-->Al2O3
Fe+O2-->Fe3O4
Na+S--->Na2S
Al+S--->Al2S3
H2+Cl2--->HCl
C+H2--->Ch4
H2+O2--->H2O
​

Answer 1

Răspuns:

4K+O2 -->2K2O

2Mg+O2-->2MgO

4Al+3O2-->2Al2O3

3Fe+2O2-->Fe3O4

2Na+S--->Na2S

2Al+3S--->Al2S3

H2+Cl2--->2HCl

C+2H2--->CH4

2H2+O2--->2H2O