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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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nuttsguy808 nuttsguy808
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11 years ago
Over the years, the thermite reaction has been used for welding railroad rails, in incendiary bombs, and to ignite solid-fuel rocket motors. The reaction is given below.
Fe2O3(s) + 2 Al(s)  2 Fe(l) + Al2O3(s)

What masses of iron(III) oxide and aluminum must be used to produce 10.0 g iron?
iron (III) oxide

aluminum
 
What is the maximum mass of aluminum oxide that could be produced?


please show work and explain and use stoichiometry
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#1
11 years ago
Iron (III) oxide:

10g Fe  (1 mol Fe2O3 / 2 mol Fe) = 5.0 g iron (III) oxide

Aluminum:

10g Fe  (2 mol Al / 2 mol Fe) = 10.0 g Aluminum

The maximum mass of aluminum oxide that can be produced:

10g Fe (1 mol Al2O3 / 2 mol Fe) = 5.0 g aluminum oxide

To use the stoichiometry correctly, you have to multimply the weight you have with the mole ratios of products and reactants.
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