Answer:
a) 9.5 moles of Oxygen
b) 1.029 × 10²⁵ Molecules
Explanation:
The balance chemical equation for said reaction is as follow:
2 C₆H₁₄ + 19 O₂ → 12 CO₂ + 14 H₂O
A)
According to equation,
2 moles of C₆H₁₄ are reacted with = 19 moles of O₂
So,
1 moles of C₆H₁₄ will react with = X moles of O₂
Solving for X,
X = 19 moles × 1 mole / 2 moles
X = 9.5 moles of Oxygen
B)
For this part first calculate moles of hexane as;
Moles = Mass / M.Mass
Moles = 245.5 g / 86.18 g/mol
Moles = 2.84 mole of Hexane
Secondly, find the number of moles of CO₂ as,
According to equation,
2 moles of C₆H₁₄ produced = 12 moles of CO₂
So,
2.84 moles of C₆H₁₄ will produce = X moles of CO₂
Solving for X,
X = 12 moles × 2.84 mole / 2 moles
X = 17.09 moles of CO₂
Lastly, calculate the number of molecules of CO₂ as,
Number of Molecules = Moles × 6.022 × 10²³ molecules/mole
Number of Molecules = 17.09 moles × 6.022 × 10²³ molecules/mole
Number of Molecules = 1.029 × 10²⁵ Molecules
