Question

Propane gas, C3H8, burns in excess oxygen gas. When the equation for this reaction is correctly balanced and all coefficients are reduced to their lowest whole-number terms, the coefficient for O2 is
(A) 4 (B) 5 (C) 7 (D) 10 (E) 22

Answer 1

Answer:

5

Explanation:

First find the balanced equation for this rxn

C3H8    +  5O2    ====>     3 CO2    + 4  H2O