Question

show that the relaive mass,Mr,of aluminium sulfate is 342

the relative atomic mass,Ar,of Al = 27, O = 16 and S = 32

Answer 1

Formula of aluminium sulphate:Al2(SO4)3

relative molecular mass=2(27)+3(32+4(16))

=54+3(32+64)

=54+3*96

=54+288=342

Hope it was helpful

Answer 2

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