Question

How many molecules of C3H8 are required to react with 10 molecules of O2? C3H8(g) + 5 O2(g) ---> 3 CO2(g) + 4 H2O(l)

Answer 1

5 molecules of O2 react with 1molecule of C3H8

So, 10 molecules of O2 react with 2 molecule of C3H8