Помогите осуществить цепочку превращений
1)Cu--CuCl2--Cu(OH)2--CuO--Cu
2)P--P2O5--H3PO4--Na3PO4--Na2HPO4
3)Mg--MgO--Mg(OH)2--MgCO3--Mg(HCO3)2
4)N2--NO--NO2--HNO3--NH4NO3
5)Fe--FeSO4--Fe(OH)2--FeO--Fe
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