Question

in the reaction, for every molecule of propane, how many molecules of oxygen are used? propane c3h8 + oxygen gas 5o2 → carbon dioxide 3co2 + water 4h2o + heat and light the diagram represents the chemical reaction that occurs when propane combusts.

Explanation:

Step1: Identify the chemical equation

The reaction is $C_3H_8 + 5O_2
ightarrow3CO_2 + 4H_2O$.

Step2: Determine the ratio

From the balanced - chemical equation, for every 1 molecule of $C_3H_8$, 5 molecules of $O_2$ are used.

Answer:

5