2C6H14+19O2---->12CO2+14H2O What mass of oxygen (O2) is required to react completely with 11.7g of C6H14?
You will need 41.3 g of oxygen.
The balanced equation is
2C₆H₁₄ + 19O₂ → 12CO₂ + 14H₂O
Step 1. Calculate the moles of C₆H₁₄
Step 2. Calculate the moles of O₂
Step 4. Calculate the mass of O₂