Відповідь:
2Ca+O2=2CaO
2Fe+3O2=2Fe2O3
2SO2+O2=2SO3
2Br2+7O2=2Br2O7
2CuS+3O2=2CuO+2SO2
C2H4+3O2=2CO2+2H2O
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Verified answer
Відповідь:
2Ca+O2=2CaO
2Fe+3O2=2Fe2O3
2SO2+O2=2SO3
2Br2+7O2=2Br2O7
2CuS+3O2=2CuO+2SO2
C2H4+3O2=2CO2+2H2O