Question

Given the unbalanced combustion equation: C3H8 + O2 → CO2 + H2O, how many moles of carbon dioxide are produced when 64.0 g of oxygen is reacted with excess propane?

Answer 1

Moles of Carbon dioxide : 1.2

Further explanation

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.

Reaction(balanced)

C₃H₈ + 5O₂=> 3CO₂ + 4H₂O

mol of O₂ :

$\tt \dfrac{64}{32}=2$

mol of CO₂ :

$\tt \dfrac{3}{5}\times 2=1.2$