Stoichiometric Calculations

Question

1 C₃H₈(g) + 5 O₂(g) → 3 CO₂(g) + 4 H₂O(g) based on this balanced equation, how many moles of water would be produced when 10 moles of oxygen gas (O₂) react with excess propane (C₃H₈)?

Answer 1

This comes straight from dimensional analysis and the coefficients of balanced reaction: (10 mole O₂) * (4 mole H₂O / 5 mole O₂) = 8 mole H₂O.