CОЧНО!!!!!
Доберіть коефіцієнти у таких схемах реакцій:
Fe + O2 = Fe3 O4 ;
Al + F2 = AlF3 ;
S + O2= SO2 ;
N2 + H2 = NH3 ;
CH4 = C + H2 ;
FeO + O2 = Fe3 O4 ;
P + Br2 = PBr5 ;
Fe + Cl2=FeCl3
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