-->
1. 9 . . .
< !-- ot vovana -->
!
!
>>
9
1
, ( ).
. .
1
MgCO
3
→ MgCl
2
→ Mg(OH)
2
→ MgSO
4
2
CuSO
4
→ Cu(OH)
2
→ CuO → Cu
3
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