Answer to Question #307423 in General Chemistry for hein

Question

If 25 g of C3H8 reacts with excess Oxygen, how many moles of water will be formed?

Answer 1

C₃H₈ + 5O₂ = 3CO₂ + 4H₂O;

M(C₃H₈) = 44 g/mole;

n(C₃H₈) = m/M = 25/44 = 0.57 moles;

According to the chemical reaction: n(H₂O) = 4 * n(C₃H₈) = 4 * 0.57 = 2.28 moles.

Answer: 2.28 moles.