Question

Розставте коефіцієнти:
Ca+O 2 = CaO
Fe 2 O 3 + Al = Al 2 O 3 +Fe
Fe +O 2 = Fe 2 O 3
V 2 O 5 +CO = V +CO 2
Cu+ O 2 = CuO
Na 2 O + HNO 3 = NaNO 3 +H 2 O
Ca + H 2 O = Ca(OH) 2 +H 2
CuO +HCl =CuCl 2 +H 2 O
C 2 H 4 + O 2 =CO 2 + H 2 O
CaO +H 2 O =Ca(OH) 2

Answer 1

Ответ:

2Ca+O2=2CaO

Fe2O3+2Al=Al2O3+2Fe

4Fe+3O2=2Fe2O3

V2O5+5CO=2V+5CO2

2Cu+O2=2CuO

Na2O+2HNO3=2NaNO3+H2O

Ca+2H2O=Ca(OH)2+H2

CuO+2HCL=CuCL2+H2O

C2H4+2O2=2CO2+2H2O

CaO+H2O=Ca(OH)2