MDCAT Chemistry MCQ #446

Consider a sample containing 0.1 moles of formaldehyde gas. What is the total number of sigma bonds, in terms of Avogadro's number (Na), present?

MDCAT Chemistry MCQ #446

  1. Question 1

    Q1. Consider a sample containing 0.1 moles of formaldehyde gas. What is the total number of sigma bonds, in terms of Avogadro's number (Na), present?

    • A) 0.1 Na
    • B) 0.2 Na
    • C) 0.3 Na
    • D) 0.4 Na

    Answer: 0.3 Na

    Explanation: Formaldehyde has three sigma bonds (two C-H and one C-O); 0.1 moles contain 0.3 Na sigma bonds. 0.4 Na includes the pi bond.