Question

unit 3 chem l test 2526
which statement about the mole is true?
a mole is used to simplify the counting of atoms.
the number of representative particles in a mole (6.02 x 10²³) is called avogadros number.
representative particles can be atoms, molecules, or formula units.
all of the above

Explanation:

A mole is a unit for counting atoms. Avogadro's number ($6.02\times 10^{23}$) represents the number of representative particles in a mole. Representative particles can be atoms, molecules, or formula - units.

Answer:

D. All of the above