Ответ:
1)Na2O, 2)CaO, 3)Fe2O3, 4)CO2, 5)P2O5, 6)CrO3, 7)Mn2O7,
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Ответ:
1)Na2O, 2)CaO, 3)Fe2O3, 4)CO2, 5)P2O5, 6)CrO3, 7)Mn2O7,