The combustion of propane (C3H8) produces CO2 and H2O:

Question

C3H8 (g) + 5O2 (g) → 3CO2 (g) + 4H2O (g)

The reaction of 3.5 mol of O2 will produce ________ mol of H2O.

Answer 1

3.5 mols O2 x (4 mols H2O/5 mols O2) = 3.5 x 4/5 = ?

Answer 2

2.8