Acids, Bases, or Salts?

Question

if they are acids, are they weak or strong.

Ba(OH)2
KOH
H2S
Al(NO3)3
CaCl2
Na2SO4
Mg(OH)2
H2CO3
NH4OH
NH4Cl
HBr
FeBr3

Answer 1

Ba(OH)2 strong base
KOH strong base
H2S weak base
Al(NO3)3 weak acid
CaCl2 salt
Na2SO4 salt
Mg(OH)2 weak base
H2CO3 weak acid
NH4OH weak base
NH4Cl salt
HBr weak acid
FeBr3 salt