Question

ratio by mass of al2(so4)3

Answer 1

Ratio by mass of Al2 (SO4)3= Mass of Al2/Mass of (SO4)3
= (27×2)/(32+64)3
54/288
=3:16







Hope it helped and satisfied you!!
:)

Answer 2

Hey dear,
Did you mean 'mass ratio of combining elements of Al2SO4 ?'

● Answer -
Ratio of masses of -
Al:S:O = 27:16:32

● Calculations -
Mass ratio of combining elements can be given by -
Al : S : O = 2×M(Al) : 1×M(S) : 4×M(O)
Al : S : O = 2×27 : 1×32 : 4×16
Al : S : O = 54 : 32 : 64
Al : S : O = 27 : 16 : 32

Therefore, ratio of masses of combining elements is Al:S:O = 27:16:32 .

Thanks for asking..