Avogadroállandóhoz

Avogadroállandóhoz is the Hungarian term for Avogadro's constant. This fundamental physical constant is a key concept in chemistry and physics. It represents the number of constituent particles, such as atoms, molecules, or ions, that are contained in one mole of a substance. The accepted value for Avogadro's constant is approximately 6.02214076 × 10^23 particles per mole. This value is exact by definition since the 2019 redefinition of the SI base units. The constant is named after the Italian scientist Amedeo Avogadro, who in 1811 first hypothesized that equal volumes of gases at the same temperature and pressure contain equal numbers of molecules. Avogadro's constant provides a bridge between the macroscopic world, which we can measure directly, and the microscopic world of atoms and molecules. It allows scientists to quantify the amount of a substance in terms of the number of individual particles. For example, if you have one mole of water, you have approximately 6.022 × 10^23 water molecules. This constant is essential for calculations involving chemical reactions, molar mass, and the ideal gas law.