6
practice examMultiple Choice

Practice Exam

Question 6 • Chemistry

Consider the reaction. 2 Al sub 2 cap o sub 3 rightarrow 4 Al plus 3 cap o sub 2 How many moles of oxygen are produced if 11 point 0 mol of Al are produced?

Answer
A
8 point 2 5 mol
B
11 point 0 mol
C
14 point 7 mol
D
16 point 5 mol

Explanation

The balanced equation shows that 4 mol of Al are produced for every 3 mol of O₂. Use the mole ratio: 11.0 mol Al × (3 mol O₂ ÷ 4 mol Al) = 8.25 mol O₂. Therefore, the correct choice is 8.25 mol.

AI-written and checked against the verified answer.

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