MDCAT Chemistry MCQ #1761

A student reacts boron trifluoride with ammonia to form an adduct. How many total coordinate covalent bonds are present in two moles of this adduct?

MDCAT Chemistry MCQ #1761

  1. Question 1

    Q1. A student reacts boron trifluoride with ammonia to form an adduct. How many total coordinate covalent bonds are present in two moles of this adduct?

    • A) 3.01 x 10^23
    • B) 6.02 x 10^23
    • C) 1.20 x 10^24
    • D) 2.40 x 10^24

    Answer: 1.20 x 10^24

    Explanation: One mole of BF3-NH3 contains 6.02e23 coordinate bonds; two moles contain 1.20e24. 6.02e23 is only for one mole of the adduct.