Aluminum sulfate, Al₂(SO₄)₃, can be used in water purification. What is the formula weight of this salt?

Name: Aluminum sulfate, Al 2 (SO 4 ) 3 , can be used in water purification. What is the formula weight of this salt?
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Quizplus · Accepted Answer

The formula weight of aluminum sulfate, $ \text{Al}_2(\text{SO}_4)_3 $, is calculated by summing the atomic weights of all atoms in the formula: $ 2 \times 26.98 \, (\text{Al}) + 3 \times (32.07 \, (\text{S}) + 4 \times 16.00 \, (\text{O})) = 342.30 \, \text{amu} $.

Aluminum Sulfate, Al2(SO4)3, Can Be Used in Water Purification

Aluminum Sulfate, Al₂(SO₄)₃, Can Be Used in Water Purification