October 2021 1 12 Report
Среди перечисленных веществ выберите соединения, обладающие амфотерными свойствами
Выберите один или несколько ответов:
a. CuO
b. Al2O3
c. MgO
d. NaOH
e. Zn(OH)2
f. Cu(OH)2
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