MDCAT Chemistry MCQ #4531

A 100 g sample of C₄H₁₀ is burned. How many moles of O₂ are consumed?

MDCAT Chemistry MCQ #4531

  1. Question 1

    Q1. A 100 g sample of C₄H₁₀ is burned. How many moles of O₂ are consumed?

    • A) 18.2 mol
    • B) 25.0 mol
    • C) 32.5 mol
    • D) 40.0 mol

    Answer: 18.2 mol

    Explanation: Molar mass C₄H₁₀ = 58 g/mol. 100/58 = 1.72 mol. Balanced equation uses 13/2 O₂ per mole. Distractor B uses 1 instead of 13/2.