Ba+O2= Ca+Cl2 N2+H2 S+O2 решите
2Ba + O2 -> 2BaO Ca + Cl2 -> CaCl2 N2 + 3H2 -> 2NH3 S + O2 -> SO2
2Ba+O2-->2BaO Ca+CL2-->CaCL2 N2+3H2-->2NH3 S+O2-->SO2