2C4H10(g) + 13O2(g) → 8CO2(g) + 10 H2O(g) How many moles of O2 are required to react completely with 5.00 moles C4H10?

32.5 moles of oxygen are required.

Explanation:

Given data:

Number of moles of C₄H₁₀ = 5.00 mol

Number of moles of oxygen required = ?

Chemical equation:

2C₄H₁₀ + 13O₂   →  8CO₂ + 10H₂O

Now we will compare the moles of oxygen with C₄H₁₀ through balanced chemical equation.

                                        C₄H₁₀            :            O₂

                                            2               :              13

                                          5.00           :           13/2×5 = 32.5

So when 5 moles of C₄H₁₀ are present 32.5 moles of oxygen are required to react completely.