What is a Mole?

• Chemistry is quantitative in nature—its unit is the mole.
• The mole as a unit versus “dozen” as a unit.
• The unit “dozen” is associated with twelve units.
• The unit mole is associated with 6.02 × 1023 units.
• There is Avogadro’s number of units in every mole.
• 6.02 × 1023 units is known as Avogadro’s number.
• 1 mole = 6.02 × 1023 units
• One mole of Cu atoms has
• an atomic mass of 63.55 grams, which is
• 6.022 × 1023 Cu atoms, which is
• approximately 22 pennies.