Question

va rooooog cat mai repedeeee, dau coroana, e urgenttt, acumm imi trebuie!!​

Answer 1

Răspuns:

Explicație:

4Al + 3O2=2 Al2O3

2HCl +Mg = MgCl2 +H2

FeCl3 +3 NaOH = Fe(OH)3 + 3NaCl

2NaNO3= 2NaNO2 +O2

(NH4)2CO3=2 NH3 + CO2 + H2O

Na2SO4 + BaCl2=2NaCl + BaSO4

Ca(OH)2 + 2HCl=CaCl2 +2H2O

-metale : Al, Mg

-nemetale : O2,H2

-oxizi : Al2O3 , CO2

-baze : NaOH , Ca(OH)2  ,Fe(OH)3,NH3 [ are caracter bazic ]

-acizi : HCl ,

-saruri :MgCl2 , FeCl3 , NaCl , (NH4)2CO3, NaNO3 ,NaNO2,

           Na2SO4 , BaCl2 , BaSO4 , CaCl2