MDCAT Chemistry MCQ #4532

Calculate the mass of 11.2 dm³ of pentane (C₅H₁₂) vapor at STP.

MDCAT Chemistry MCQ #4532

  1. Question 1

    Q1. Calculate the mass of 11.2 dm³ of pentane (C₅H₁₂) vapor at STP.

    • A) 17.2 g
    • B) 34.4 g
    • C) 51.6 g
    • D) 68.8 g

    Answer: 34.4 g

    Explanation: At STP, 22.4 dm³ = 72 g pentane. 11.2 dm³ = 36 g. Distractor A uses half molar mass.