5) a,б та в
6) 1,В
2,А
3.Б
7) CuO + H2O =Cu(OH)2
P2O5 + 3 H2O = 2 H3PO4
Na2O + H2O = 2 NaOH
8)Г: 3/27=0,052*100%=5,2
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Answers & Comments
5) a,б та в
6) 1,В
2,А
3.Б
7) CuO + H2O =Cu(OH)2
P2O5 + 3 H2O = 2 H3PO4
Na2O + H2O = 2 NaOH
8)Г: 3/27=0,052*100%=5,2