Saturday, April 24, 2010

How many moles of Aluminum are needed to form 3.4 moles of Aluminum oxide?

Aluminum oxide is formed from the reaction of metallic aluminum with oxygen gas. How many moles of Aluminum are needed to form 3.4 moles of Aluminum oxide? This is a simple ratio problem. Mass is not involved.

How many moles of Aluminum are needed to form 3.4 moles of Aluminum oxide?
The formula for aluminium oxide is Al2O3 (you can just google the term if you want to know the chemical formula for a compound). If you wanted one molecule of Al2O3, you would obviously need two atoms of aluminium. So, if you want 3.4 moles of Al2O3, you would need twice as many moles of aluminium.

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