- Calculating the mass of aluminium ions in 3 moles of Aluminium sulphate

Calculating the molar mass of Aluminium sulphate
- The molar mass of Aluminium sulphate (Al2(SO4)3) can be calculated by adding the atomic masses of all the elements present.
- The atomic mass of Al is 26.98 g/mol, S is 32.06 g/mol, and O is 16.00 g/mol.
- Therefore, the molar mass of Al2(SO4)3 = 2(26.98) + 3(32.06 + 4(16.00)) = 2(26.98) + 3(32.06 + 64.00) = 2(26.98) + 3(96.06) = 2(26.98) + 288.18 = 53.96 + 288.18 = 342.14 g/mol.

Calculating the number of moles of Aluminium ions in 3 moles of Aluminium sulphate
- In one mole of Aluminium sulphate, there are 2 moles of Aluminium ions (Al3+).
- Therefore, in 3 moles of Aluminium sulphate, there are 3 x 2 = 6 moles of Aluminium ions.

Calculating the mass of Aluminium ions in 3 moles of Aluminium sulphate
- The mass of Aluminium ions can be calculated by multiplying the number of moles of Aluminium ions by the molar mass of Aluminium.
- Mass = number of moles x molar mass = 6 moles x 26.98 g/mol = 161.88 g.
- Therefore, the mass of Aluminium ions present in 3 moles of Aluminium sulphate is 161.88 grams.