Mr BaS= Ar(Ba) + Ar(S)=137 + 32=169
Mr Ba3(PO4)2=Ar(Bax3) + Ar(P) + Ar(Ox4)=(137x3)+31+(16x4)=506
Mr NaHSO4=Ar(Na) + Ar(H) + Ar(S) + Ar(O)4=23 + 1 +32 + (16x4)=120
Mr BaS= Ar(Ba) + Ar(S)=137 + 32=169
Mr Ba3(PO4)2=Ar(Bax3) + Ar(P) + Ar(Ox4)=(137x3)+31+(16x4)=506
Mr NaHSO4=Ar(Na) + Ar(H) + Ar(S) + Ar(O)4=23 + 1 +32 + (16x4)=120