Propane on reaction with Oxygen produces CO₂ and water;
C₃H₈ + 10 O₂ → 3 CO₂ + 4 H₂O
According to Balance equation,
1 mole of C₂H₈ required = 10 moles of O₂
Then,
0.105 moles of C₂H₈ will require = X moles of O₂
Solving for X,
X = ( 10 mol × 0.105 mol) ÷ 1 mol
X = 1.05 mol of O₂
Result:
1.05 mol of O₂ is required to consume 0.105 mol of C₂H₈ completely.