molmassan
Molmassan, commonly referred to as the molar mass, is the mass of one mole of a substance. It expresses how much matter a mole of the substance contains and is typically given in grams per mole (g/mol). The molmassan is calculated by summing the contributions of all atoms in the formula of the substance, weighted by their quantities.
For a compound, the molar mass is M = Σ (a_i × M_i), where a_i is the number of
Isotopic variation and hydration can affect the molmassan. If a compound contains water of crystallization or
The molar mass is fundamental for converting between mass and amount in moles, enabling stoichiometric calculations
Examples: water (H2O) has a molmassan of about 18.015 g/mol; glucose (C6H12O6) is approximately 180.156 g/mol.