Напишите пожалуйста, цепочки превращений:
1. Al2O3 -> AlCl3 -> Al(OH)3 -> K[Al(OH)4] -> Al(OH)3
2. Al ->Al2O3 ->NaAlO3 -> Al(NO)3
3. Al -> AlCl3 -> Al(OH)3 -Al(NO)3
4. CaCo3 -> Ca(HCO3)2 -> CaCO3 -> Cacl2 -> CaS
5. Fe -> Fe(NO3)3 ->Fe(OH)3 -> Fe2O3 -> FeCl3
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