MDCAT Chemistry MCQ #2808

How many moles of O₂ are in 15.0 L at STP? (Molar volume = 22.4 L/mol)

MDCAT Chemistry MCQ #2808

  1. Question 1

    Q1. How many moles of O₂ are in 15.0 L at STP? (Molar volume = 22.4 L/mol)

    • A) 0.670 mol
    • B) 0.336 mol
    • C) 0.660 mol
    • D) 0.333 mol

    Answer: 0.670 mol

    Explanation: 15.0/22.4 = 0.670 mol. C uses 22.7 L/mol as molar volume.