November 2021 1 6 Report
У якому ряду є лише основні оксиди?

а) CaO, Al2O3, N2O, Cu2O

б) K2O, BaO, MgO, FeO

в) Al2O3, CO2, CaO, P2O5

г) K2O, ZnO, BaO, NO2​
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