chemistry queston

Question

Based on the balanced reaction below, determine the number of grams of oxygen required to completely react with 2.15 g of propane, C3H8

C3H8(g) + 5 O2(g) -> 3 CO2(g) + 4 H2O(l)

Answer 1

Use dimensional analysis along with the stoichiometry of the balanced equation:

2.15 g C₃H₈ x 1 mol C₃H₈ / 44.1 g x 5 mol O₂ / mol C₃H₈ x 32 g O₂ / mol = 7.80 g O₂