H2O=1.2+16=18
BaO=137+16=153
Na2SO4=23.2+32+16.4=142
Fe2(SO4)3=56.2+96.3=400
CuSO3=64+32+16.3=144
Lưu ý, trong này có dùng dấu "." mak dấu "." là dấu nhân nha
a, PTK H2O = 2.1+16= 18 (đvC)
b, PTK BaO = 137+16= 153 (đvC)
c, PTK Na2SO4 = 2.23 + 32 + 4.16 = 1312 (đvC)
d, PTK Fe2(SO4)3 = 2.56 + 3.32 + 12.16 = 3270336 (đvC)
e, PTK CuSO3 = 64 + 32 + 3.16 = 144 (đvC)
a) H2O =1.2+16=18đvC
b) BaO=137+16=153đvC
c) Na2SO4=23.2+32+16.4=142đvC
d) Fe2(SO4)3=56.2(32+16.4).3=32256đvC
e) CuSO3=64+32+16.3=144đvC