Ответ:
3 Fe+ 2 O2= Fe3O4
Si+ 2 Mg=Mg2Si
2 Na+S=Na2S
CaO+ 3 C=CaC2+CO2
3 Ca + N2=Ca3N2
Si+ 2 Cl2=SiCl4
2 Ag +S=Ag2S
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Ответ:
3 Fe+ 2 O2= Fe3O4
Si+ 2 Mg=Mg2Si
2 Na+S=Na2S
CaO+ 3 C=CaC2+CO2
3 Ca + N2=Ca3N2
Si+ 2 Cl2=SiCl4
2 Ag +S=Ag2S