Molekulargewichtsverteilungen

Molekulargewicht, often abbreviated as MW, refers to the mass of one mole of a substance. A mole is a unit of measurement in chemistry that represents a specific number of particles, typically atoms or molecules. This number is known as Avogadro's number, approximately 6.022 x 10^23. Therefore, the molecular weight of a compound is the sum of the atomic weights of all the atoms in one molecule of that compound, expressed in grams per mole (g/mol).

Atomic weights are found on the periodic table and represent the average mass of atoms of an element. To calculate the molecular weight of a compound, one simply multiplies the atomic weight of each element present by the number of atoms of that element in the chemical formula and then sums these values. For example, the molecular weight of water (H2O) is calculated by taking the atomic weight of hydrogen (approximately 1.008 g/mol) and multiplying it by two, then adding the atomic weight of oxygen (approximately 15.999 g/mol). This results in a molecular weight of approximately 18.015 g/mol for water. Molecular weight is a fundamental concept in stoichiometry, chemical reactions, and various analytical techniques in chemistry.