Answer: 10.8 mol
Step-by-step explanation:
The balanced equation in the image represents the reaction where aluminum chloride is formed from its elements.
From this equation, we know that for every 2 moles of aluminum consumed, 2 moles of aluminum chloride are produced (we can reduce this to conclude that moles of aluminum consumed = moles of aluminum chloride produced)
This means the answer is 10.8 mol.