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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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Rj55 Rj55
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11 years ago
Stoichiometry................ ... 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?
Hint: This is a simple ratio problem. Just use the molar ratio from the balanced equation. This was covered in 5.09. Mass is not involved.
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wrote...
#1
11 years ago
The balanced equation is

4 Al +3 O2 = 2 Al2O3

the ratio between Al and Al2O3 is 4 : 2

moles Al needed = 3.4 x 4 / 2 = 6.8
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