July 2022 1 1 Report
Из перечисленных формул:H2CO3,Na2S,LiOH,MgO,Fe(OH)2,Fe2O3,N205,Na2SiO3,FeS,HCI,Cr(OH)3 что из этого является оксидами,что кислотами,что основанием,и что солью???
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