Chemistry II(2) , Chapter#3 section#3 (the MOLE) of "Chemistry" (7th editions) by Zumdahl and Zumdahl This exercise is aimed for Chemistry 2 students studying section #3 of Chapter#3 of the text " Chemistry" (7th edition) authored by Zumdahl and Zumdahl.This chapter (#3) is titled " Stoichimetry" and this section (#3) is titled " The Mole".