How can I find the percent compositions of Al2(SO4)3?
1 Answer
May 29, 2014
To find the percent composition of Al₂(SO₄)₃, you divide the total mass of each atom by the molecular mass and multiply by 100 %.
Explanation:
% by mass =
Mass of 2 Al atoms = 2 Al atoms ×
Mass of 3 S atoms = 3 S atoms ×
Mass of 12 O atoms = 12 O atoms ×
Mass of 1 Al₂(SO₄)₂ formula unit = (53.96 + 96.18 + 192.0) u = 342.1 u
% of Al =
% of S =
% of O =