4Fe+302→2Fe2o3. how many moles of oxygen are needed if we have 8 moles of fe

For 8 moles of iron 6 moles of oxygen are required.

Explanation:

Given data:

Number of moles of oxygen needed = ?

Number of moles of Fe = 8 mol

Solution:

Chemical equation:

4Fe + 3O₂   →  2Fe₂O₃

Now we will compare the moles of iron and oxygen from balance chemical equation.

                         Fe         :          O₂

                          4          :            3

                          8          :          3/4×8 = 6

So for 8 moles of iron 6 moles of oxygen are required.

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