Өзгерістерді іске асыратын,реакция теңдеулерін жазыңдар?
1)MgCO3→MgCI2→Mg→MgSO4→Mg(NO3)2
2)Na→NaOH→Na2SO4→NaNO2
3)C→CO2→CaCO3→CO2→Ca(HCO3)2→CaCO3
4)Al→Al2O3→Al2(SO4)3→Al(OH)3→AlCl3→Al​
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