MDCAT Chemistry MCQ #108

The density of ethanol is 0.789 g/mL. What is the volume containing 0.5 mol of ethanol (molar mass=46 g/mol)?

MDCAT Chemistry MCQ #108

  1. Question 1

    Q1. The density of ethanol is 0.789 g/mL. What is the volume containing 0.5 mol of ethanol (molar mass=46 g/mol)?

    • A) 14 mL
    • B) 22 mL
    • C) 29 mL
    • D) 46 mL

    Answer: 29 mL

    Explanation: Mass = 0.5 × 46 = 23 g. Volume = 23 / 0.789 ≈ 29 mL. Option B uses 0.5 mol × 0.789 = 0.39 L directly.