Can somebody help me with this stoichiometry problem?

The human body requires energy that comes from metabolizing sucrose, C12H22O11, given 268.8L of oxygen, how many liters of carbon dioxide (at STP) are produced?

268.8 L is 12 moles at STP of O2.

Write the balanced reaction for metabolizing sucrose to CO2 and H2O.

C12H22O11 + 12 O2 = 12 CO2 + 11 H2O

12 moles of O2 produce an equal number of moles (and an equal volume) of CO2.