ПОЖАЛУЙСТА РЕШИТЕ СРОЧНО! CAO+C=
CAC2+CO=
CO2+C=
BR2+KL=
MG+H3=
FE+O2=
FE+O4=
MG+N2=
SI+MG=
FE+O2=
FE3+O4=
MG3+N2=
SI+MG=
MG2+SI=
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