What mass of carbon dioxide is produced by the complete combustion of 3.0 g of ethane (C = 12, H = 1, O = 16)?
Correct answer C. 8.8 g
Explanation
2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O. Moles of ethane = 3.0/30 = 0.10 mol, giving 0.20 mol CO₂. Mass = 0.20 × 44 = 8.8 g.
Answer checked How we write and check questions
Discussion