When aluminum is mixed with iron(III) oxide, iron metal and aluminum oxide are produced along with a large quantity of heat.

Question

Fe2O3(s) + 2 Al(s) 2 Fe(s) + Al2O3(s) + heat

What mole ratio would you use to determine moles Fe if moles Fe2O3 is known?

Answer 1

1. You need to find the arrow key(s) and use them. --> is the way to do it.

2. It is better to give a problem with numbers because it makes it easier to explain.
In this case mols Fe will be twice the mols Fe2O3. That's what the coefficients in the balanced equation tells you.

Answer 2

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