a)CTHH:Fe(NO3)2
PTK=56+(14+16.3).2=180(đvC)
b)CTHH:Na2SO4
PTK=23.2+32+16.4=142(đvC)
c)CTHH:Ca3(PO4)2
PTK=40.3+(31+16.4).2=310(đvC)
d)CTHH:CuCl2
PTK=64+35,5.2=135(đvC)
a) Fe(NO3)2 , MFe(NO\(_3\))=56+(14+16.3).2=180(đvC)
b)Na2SO4, M\(_{Na_2SO_4}\)=23.2+32+16.4=142(đvC)
c)Ca3(PO4), M\(_{Ca_3\left(PO_4\right)_2}\)=40.3+(31+16.4).2=310(đvC)
d)CuCl2, M\(_{CuCl_2}\)=64+35,5.2=135(đvC)