Calculate the formula mass of = Aluminium Sulphate

1.	Calculate the formula mass of = Aluminium Sulphate
Answer» Gram molar mass of Al2(SO4)3 = (2 x 27) + [ 3 x (32 + 64)] = 342 g 1 mole of Al2(SO4)3 weighs = 342 g Hence, 0.5 mole of Al2(SO4)3 will weigh = 342 x 0.5 = 171 g

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