ms = m Al2(SO4)3 + m Al(NO3)3 + m H2O = 150g
ms = m1+ m2 + m3 = 150g
mAl = 27(2·m1/ 342 + m2/213) = 27(m1/171 + m2/213) = 3m1/19 + 9m2/71
(3m1/19 + 9m2/71)·100/150 = 4,32
3m1/19 + 9m2/71 = 6,48
m O = 16(12·m1/342 + 9·m2/213 + m3/18) =16( 2m1/57 +3m2/71 + m3/18)
(32m1/57 + 48m2/71 + 8m3/9)·100/150 = 80,22
32m1/57 + 48m2/71 + 8m3/9 = 120,33
8m1/9 + 8m2/9 + 8m3/9= 150··8/9= 400/3
m1(8/9 - 32/57) + m2(8/9 - 48/71) = 13
56m1/(9·19) + 136m2/(9·71)= 13
63m1/323 + 9m2/71 = 1053/136
m1(63/323 - 3/19) = 1053/136 - 6,48 m1 ≈ 34g m2 ≈8,79g m3 = 57,21g
% Al2(SO4)3 = 34·100/150 = 22.66%
%Al(NO3)3 = 879/150 = 5,86%