Расставьте коэффициент, преобразовав схемы в уровнения реакций:

1)FeCl3 + Fe - FeCl3
2)P2O5 + H2O - H3PO4
3)HgCl2 + Al - AlCl3 + Hg
4)Mg + H2O - H2 + Mg(OH)2
5)Cr2O3 + Mg - MgO + Cr
6)Al + H2O - Al(OH)3 + H2
7)CuOH - Cu2O + H2O
8) Al(OH)3 - Al2O3 + H2O
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