MDCAT Chemistry MCQ #456

A sample of acetone contains 0.5 moles of the compound. How many total lone pairs of electrons are present on the oxygen atoms?

MDCAT Chemistry MCQ #456

  1. Question 1

    Q1. A sample of acetone contains 0.5 moles of the compound. How many total lone pairs of electrons are present on the oxygen atoms?

    • A) 3.01x10^23
    • B) 6.02x10^23
    • C) 1.20x10^24
    • D) 2.41x10^24

    Answer: 6.02x10^23

    Explanation: Each acetone molecule has one oxygen with two lone pairs; 0.5 moles of acetone contain 1.0 mole of lone pairs (6.02x10^23).