Treating the Avogadro Constant as a Unity-Dimensional Conversion Factor

University students of introductory general chemistry can be perplexed when they are introduced to the dimensioned quantity, the Avogadro constant (NA = NA mol–1 ). They may be awed by the enormity of its numerical part (Avogadro’s number) and confused by its numerator-less units (mol–1 ). To ease students’ discomfort in dealing with this quantity, it is recommended that general chemistry lectures not stress the enormity of NA and simplify the units by expressing a numerator (things/mol). It is further recommended that NA be interpreted as unity. Lecture notes are presented that demonstrate the unity-factor interpretation, followed by questions designed to affirm students’ understanding of the mole concept.