October 2021 1 4 Report
Выбери ряд химических формул, обозначающих вещества, все из которых могут взаимодействовать со щелочами:

SO3,HNO3,PbS
CO2,HPO3,FeCl2
CO2,Cr(OH)2,FeCl2
Si,Na2O,Cu(NO3)2
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