Ответ:
1. 2Mg+O2=2MgO
2.Cu+S=CuS
3.CaCO3->CaO+CO2
4.Mg+2HCl=MgCl2+H2
5.Fe2O3+2Al=Al2O3+2Fe
6. 2Na+S=Na2S
7. 2Al+3S=Al2S3
8. 4Na+O2=2Na2O
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Answers & Comments
Ответ:
1. 2Mg+O2=2MgO
2.Cu+S=CuS
3.CaCO3->CaO+CO2
4.Mg+2HCl=MgCl2+H2
5.Fe2O3+2Al=Al2O3+2Fe
6. 2Na+S=Na2S
7. 2Al+3S=Al2S3
8. 4Na+O2=2Na2O