Объяснение:
2) 2Al +3 S = Al2S3
2K + 2H2O = 2KOH + H2
CaCl2 + 2AgNO3 = Ca(NO3)2 + 2AgCl
Al2(SO4)3 +6 KOH =2 Al(OH)3 + 3K2SO4
3) Ba + 2H2O = Ba(OH)2 + H2
N2 + O2 = 2NO
2Fe(OH)3 = Fe2O3 + 3H2O
Al2O3 + 6HCl = 2AlCl3 + 3H2O