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Answer:
b)
i) Al2(SO4)3
ii) Al2(CO3)3
iii) Al2O3
c)
molecular mass of MgSO4= 120g/mol
percentage of sulphur in the compound= 26.66%
Explanation:
the mol mass of mg= 24
the mol mass of O= 16
the mol mass of S= 32
on adding we get = 120. (which is equal to the total molecular mass of magnesium sulphate.
%comp of sulphur= mass of sulphur/mass of MgSO4×100%
= 32/120×100%
=26.66%.
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