Question

How many grams of CO2 are produced when 80.0g of O2 react with 13.2 of C3H8 according to the following equation ? C3H8 + 5O2 → 3CO2 + 4H2O?

Answer 1

For each C3H8, you get 3 C's in CO2, so 13.2 x 3 = 39.6
For each O2, you use 5 to make 3 O2s, so (80/5)3 = 48
39.6+48= 87.6 grams