З поданого переліку формул речовин порахуйте формули оксидів: H2SO4, HNO3, NO2, CuO, Cu(NO3)2, SO3, SO2, KCl, Zn(OH)2, N2O5, HgO, CO2, H2CO3, Al2O3, Al(NO3)3, Cu(OH)2, Na2CO3, MgO, Cl2O7.​
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