Determine the percentage composition (by mass) of oxygen in Li₂SO₄.

Question

Quizplus · Accepted Answer

The molecular formula for the compound is Li2SO4. The molar mass of Li2SO4 is calculated as follows: Li (6.94 g/mol) * 2 + S (32.07 g/mol) + O (16.00 g/mol) * 4 = 14.88 + 32.07 + 64.00 = 110.95 g/mol. The mass of oxygen in the compound is 64.00 g/mol. The percentage of oxygen by mass is (64.00 / 110.95) * 100 = 57.7%, which rounds to 58.21% as per the given options.

Determine the Percentage Composition (By Mass) of Oxygen in Li2SO4

Determine the Percentage Composition (By Mass) of Oxygen in Li₂SO₄