Final answer:
3.25 moles of H2O will produce 3.25 moles of O2 according to the stoichiometric relationship established by the balanced chemical equation.
Step-by-step explanation:
The student asks how many moles of O2 are produced from 3.25 moles of H2O according to the balanced chemical equation 6CO2 + 6H2O → C6H12O6 + 6O2. To answer this, one must use the stoichiometric relationship between H2O and O2 established by the balanced equation: for every 6 moles of H2O, 6 moles of O2 are produced. Therefore, the desired equality is 6 mol H2O = 6 mol O2, and since the student has 3.25 moles of H2O, the same number of moles of O2 will be produced, which is 3.25 moles of O2.