Tag: Molecular quantities

Sample sizes of chemical substances are often measured in moles. One mole of a substance is defined as a sample having 6.022 × 1023 (Avogadro’s number) molecules25 . This number is not arbitrary – it was chosen26 such that 1 mole of carbon-12 (6.022 × 1023 individual 12C atoms together in one sample) would have a mass of exactly 12 grams. In other words, Avogadro’s…