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0.382 moles of oxygen are produced.

Explanation:

Given data:

Number of moles of oxygen produced = ?

Number of moles of N₂O₅ react = 0.7631 mol

Solution:

Chemical equation:

2N₂O₅      →      4NO₂ + O₂

Now we will compare the moles of O₂ with N₂O₅ .

                    N₂O₅       :          O₂

                        2         :            1

                  0.7631      ;          1/2×0.7631 = 0.382

0.382 moles of oxygen are produced.