A mole is a unit in chemistry that defines the number of elemental entities in a certain mass of a given substance and is represented by Avogadro’s number, which is 6.022×1023.
For example, if we wanted to know how many atoms there are in 6 moles of carbon, we could set up the following:
Likewise, if we wanted to know the number of molecules in 6 moles of carbon, we could set up an equation with the same number we used for converting to atoms, but with molecules instead of atoms:
Avogadro’s number is an SI unit and can be used with other SI units such as grams (g), and liters (L).
MCAT Official Prep (AAMC)
Chemistry Question Pack Passage 3 Question 10
• One mol is defined by Avogadro’s number, which is 6.022×1023 atoms/molecules/ions/electrons per mol; plural of mol is moles.
• Avogadro’s number is often used in chemistry to convert mass to a number of particles.
atom: the most fundamental and smallest part of an element (such as hydrogen) that can exist.
molecule: two or more atoms bonded together
SI units: International System of Units is the modern form of the metric system
avogadros number: the number of atoms in one mole of substance (6.02×1023)