In chemistry, a mole is a unit of measurement used to express the amount of a substance. One mole of a substance contains Avogadro’s number of particles, which is approximately 6.02 x 10²³. The concept of the mole is essential to chemistry as it allows chemists to easily calculate the amount of a substance in a reaction and convert between units of mass, volume, and number of particles. Continue reading Mole Concept →