Question

how many moles of CO2 are produced from 2.90 moles of C3H8? C3H8 + 5O2 yields 3CO2 +4H2O

Answer 1

Let's see. 1 mole C3H8 produces 3 moles CO2. So 2 moles C3H8 must produce 6 moles CO2. And 3 moles C3H8 must produce 9 moles CO2. Hmmm. What will 2.90 moles C3H8 produce?