Дополни формулы
6) Na2CO…
1) Al2…3
2) K…O4 7) N…3
3) Fe…O4 8) …H4
4) Cu(OH)… 9) H2…2
5) …2O5 10) …2CO5H2
7) N…3
8) …H4
9) H2…2
10) …2CO5H2
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