Question: how many moles of o2 are required to react with each mole of c6h6?
Answer: The unbalanced combustion formula, created by the information given, is C6H6 + O2 --> CO2 + H2O. From this, it can be seen that 15 moles of O2 is required for 2 moles of C6H6 to combust completely into CO2 and H2O.