Answer:
1.86moles
Explanation:
Given chemical reaction:
2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O
Mass of C₂H₆ = 18.6g
Unknown:
Number of moles of steam produced = ?
Solution:
2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O
We have checked and the equation is balanced.
Now, find the number of moles of C₂H₆ from the given mass;
Number of moles = [tex]\frac{mass}{molar mass}[/tex]
Molar mass of C₂H₆ = 2(12) + 6(1) = 30g/mol
Number of moles = [tex]\frac{18.6}{30}[/tex] = 0.62moles
From the balanced reaction equation:
2 mole of C₂H₆ will produce 6 moles of steam
0.62 moles of C₂H₆ will therefore produce [tex]\frac{0.62 x 6}{2}[/tex] = 1.86moles
