Ответ:
4K+O2=2K2O
2Mg+O2=2MgO
2Fe+O2=2FeO
4AI+3O2=2AI2O3
2Zn+O2=2ZnO
2Cu+O2=2CuO
2Ba+O2=2BaO
4Ag+O2=2Ag2O
4Cr+3O2=2Cr2O3
2Mn+O2=2MnO
2H2+O2=2H2O
C+O2=CO2
S+O2=SO2
4P+5O2=2P2O5
4B+3O2=2B2O3
N2+O2=2NO
4As+3O2=2As2O3
Si+O2=SiO2
2CI2+7O2=2CI2O7
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Ответ:
4K+O2=2K2O
2Mg+O2=2MgO
2Fe+O2=2FeO
4AI+3O2=2AI2O3
2Zn+O2=2ZnO
2Cu+O2=2CuO
2Ba+O2=2BaO
4Ag+O2=2Ag2O
4Cr+3O2=2Cr2O3
2Mn+O2=2MnO
2H2+O2=2H2O
C+O2=CO2
S+O2=SO2
4P+5O2=2P2O5
4B+3O2=2B2O3
N2+O2=2NO
4As+3O2=2As2O3
Si+O2=SiO2
2CI2+7O2=2CI2O7