Со всеми веществами какого ряда реагирует Na2O:


 

1)    SO3, H2S,
Al(OH)3



  2)   
H2O,
O2, P2O5



  3)    MgO, KOH, Al

4) 
  4)  N2,
Zn(OH)2, Ca(OH)2
 
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