How many grams of C3H8 are combust when 18.00mol of 02 are consumed

Question

_{how many grams of C3H8 are combusted when 18.00mol of O2 are consumed?}

Answer 1

Write the balanced equation:

C₃H₈ + 5O₂ ==> 3CO₂ + 4H₂O

Use stoichiometry and dimensional analysis:

molar mass C₃H₈ = 44 g

18.00 mol O₂ x 1 mol C₃H₈/5 mol O₂ x 44 g/mol C3H8 = 158.4 g C₃H₈ combusted (for complete combustion)