Answer:
6.63moles
Explanation:
Given parameters:
Mass of C₃H₈ = 97g
Unknown:
Number of moles of CO₂ = ?
Solution:
Let us write the balanced reaction equation;
C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
To solve this problem, we have to work from the known to the unknown. The known here is C₃H₈.
Since the problem suggested that O₂ is excess, C₃H₈ is the limiting reactant that will determine the amount of product formed.
First find the number of moles of C₃H₈;
Number of moles of C₃H₈ = [tex]\frac{mass}{molar mass}[/tex]
Molar mass of C₃H₈ = 3(12) + 8(1) = 44g/mol
Number of moles of C₃H₈ = [tex]\frac{97}{44}[/tex] = 2.21moles
From the balanced reaction equation;
1 mole of C₃H₈ will produce 3 moles of CO₂;
2.21 moles of C₃H₈ produces (2.21 x 3)moles of CO₂ = 6.63moles
