August 2021 2 15 Report
Установите соответствие между классом (группой) неорганических веществ и химической формулой вещества, принадлежащего к этому классу.
А) оснóвные оксиды 1) B2O3

Б) соли 2) BaO

В) амфотерные оксиды 3) H3BO3

Г) кислоты 4) ZnO

5) Zn(OH)2

6) Na2ZnO2
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