Respuesta :
Answer:
I believe Si12H26+02 is the coefficient I might be wrong, Sorry if I am.
The coefficient would be 4:
2Si2H2 + 5O2 → 4SiO2 + 2H2O (balanced reaction)
2Si2H2 + 5O2 → 4SiO2 + 2H2O (balanced reaction)