Answer :
total molar mass of Al2(SO4)3:
2(27)+3(32.1)+12(16) = 342.3
the mass of Al2(SO4)3:
number of moles times molar mass
= 1.25 times 342.3
= 427.875 kg
2(27)+3(32.1)+12(16) = 342.3
the mass of Al2(SO4)3:
number of moles times molar mass
= 1.25 times 342.3
= 427.875 kg