magmennyiség
Magmennyiség is a Hungarian term that translates to "amount of substance" in English. It is a fundamental concept in chemistry and physics, representing the number of elementary entities, such as atoms, molecules, ions, or electrons, present in a given sample of matter. The standard SI unit for magmennyiség is the mole, denoted by the symbol mol.
The mole is defined as the amount of substance that contains exactly 6.02214076 × 10^23 elementary entities.
Measuring magmennyiség often involves determining the mass of the substance and dividing it by its molar mass.