\( \dfrac{15,8}{27}:\dfrac{28,1}{32}:\dfrac{56,1}{32}\)
rút gọn
1................1,5.............6
-> 2 : 3 : 12
Al2(SO4)3
%Al + %S + %O = 100%
=> CTPT của AlxSyOz
x : y : z = \(\dfrac{15,8}{27}:\dfrac{ 28.1}{32}: \dfrac{56.1}{16}\)
1:1,5:6
= 2 : 3 : 12
=> CTĐG nhất là Al2(SO4)3