Molekylmassen

Molekylmassen, often referred to as molecular weight, is the mass of one mole of a substance. It is a fundamental property of molecules and is expressed in atomic mass units (amu) or grams per mole (g/mol). The molecular mass of a compound is calculated by summing the atomic masses of all the atoms present in its chemical formula. For example, the molecular mass of water (H2O) is found by adding the atomic mass of two hydrogen atoms (approximately 1.01 amu each) to the atomic mass of one oxygen atom (approximately 16.00 amu), resulting in a molecular mass of about 18.02 amu.

This value is crucial in various scientific disciplines, particularly in chemistry. It is used in stoichiometry to determine the amounts of reactants and products in chemical reactions, to calculate molar concentrations of solutions, and to identify unknown compounds through mass spectrometry. Understanding molecular mass is essential for quantitative analysis and for predicting the behavior of substances in chemical processes. The unit grams per mole (g/mol) is numerically equivalent to the atomic mass unit value, making calculations straightforward.