In the previous Lesson, you watched a Video Demonstration

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If 1.50 g Fe2O3 and 2.00 g Al are combined, how many grams of Al 2O3 will be produced?
Use the following steps to solve this problem.
Be sure to use units and the rules of significant figures.
1. Balance the thermite reaction:
Fe2O3(s) + 2Al(s) 2Fe(s) + Al2O3(s)
Fe2O3(s) + 2Al(s) 2Fe(s) + Al2O3(s)
2a. Convert 1.50 g Fe2O3 to moles
Show work here.
55.85 ( 2 )+15.999 ( 3 ) =Molar Mass of Fe 2 O3=159.69 g/mol

9.3 x 10?3 mol

1.5 g Fe2 O3 159.69 g Fe2 O 3
=
=0.0093932mol?? 9.3 x 10?3 mol
x
1mol
2b. Convert the moles of Fe2O3 from 2a to moles of Al2O3
Show work here.

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3a. Convert 2.00 g Al to moles
Show work here.

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3b. Convert the moles of Al from 3a to moles of Al 2O3
Show work here.

4. Which is the limiting reactant, Fe2O3 or Al? Why?

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Fe2O3
5. Convert the moles of Al2O3 (produced by
the limiting reactant) to grams.
Show work here.

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Stoichiometry: A Reaction of Sodium Bicarbonate and Acetic Acid
Be sure to use units and the rules of significant figures.