Chemistry Calculations homework help!!

Q1. What is the volume of H2O produced from a reaction of 5.98g of O2? (Answer = 8.372 L of H2O)

2H2 + O2 → 2H2O

Q2. How many moles of NaCl are produced from 12.45L of Cl2? (Answer = 1.11 moles of Cl2)

2Na + Cl2 → 2NaCl