\(Al_2O_3.PTK:2.27+3.16=102\)
\(K_2O.PTK:2.39+16=94\)
\(Fe_2\left(SO_4\right)_3.PTK:400\)
a)Al2O3. PTK: 2.27+16.3=102(đvC)
b)K2O.PTK: 2.39+16=94(đvC)
c)Fe2(SO4)3.PTK: 2.56+96.3=400(đvC)
#Walker
a) Al2O3
M = 27*2 + 16*3 = 102 đvc
b) K2O
M = 39*2 + 16 = 94 đvc
c) Fe2(SO4)3
M = 56*2 + 96*3 = 400 đvc