Respuesta :

2C₂H₂ + 5O₂ ---> 4CO₂ + 2H₂O
2 mol.....5 mol

2 mol C₂H₂ --- 5 mol O₂
35 mol C₂H₂ --- X mol O₂
X = (35×5)/2
X = 87,5 mol O₂