Chemistry QUestion

Question

The combustion of pentane C5H₁₂ produced 6.57 moles of water. How many moles of Oxygen was necessary to make this reaction take place?

Answer 1

C₅H₁₂ + 8O₂ ==> 5CO₂ + 6H₂O ... balanced equation

Using dimensional analysis, we can find moles of O₂ needed to react with 6.57 moles of C₅H₁₂

6.57 mol C₅H₁₂ x 8 mol O₂ / 1 mol C₅H₁₂ = 52.6 moles O₂