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Sounds like an acid metal reaction to produce hydrogen gas, so I will assume you meant hydrochloric acid. Complete reaction indicates aluminum is limiting and drives the reaction.

2Al + 6HCl --> 2AlCl3 + 3H2

3.0 moles Al (3 moles H2/2 moles Al)

= 4.5 mole hydrogen gas produced

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βˆ™ 11y ago
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βˆ™ 12y ago

4 Al + 3O2 ------> 2Al2O3 so 4 moles of Aluminium react with 6 moles of oxygen atoms or 3 moles of oxygen molecules. So 5 moles of Al reacts with 5/4 x 6 = 7.5 moles of oxygen atoms or 3.75 moles of oxygen molecules.

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βˆ™ 11y ago

7.5 moles...

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Q: How many moles of O2 must react with 5 moles of Al?
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