What does avogadro’s number represent?

Avogadro's number represents the number of units in a single mole of any substance (also referred to as the "molecular weight" of the substance). Keep in mind that the units may be electrons, atoms, ions, or molecules, depending on the substance and its reaction. Avogadro's number is 6.022140857 × 10^{23} [/tex].

Self-ionizes to form an equilibruium system in which [ h_{3} o^{+} ]=[ oh^{-} ]=10^{-7} m