Question

define molar mass

Answer 1

Molar mass is defined as the mass of one mole of a substance, typically expressed in grams per mole (g/mol). It quantitatively represents the mass of all the atoms in a given chemical formula. Molar mass is calculated by summing the atomic masses of all the atoms in the molecular or empirical formula of the substance, usually obtained from the periodic table. For example, the molar mass of water (H₂O) is approximately 18.02 g/mol, calculated from the mass of two hydrogen atoms (approximately 1.01 g/mol each) and one oxygen atom (approximately 16.00 g/mol). Molar mass is a crucial concept in chemistry for converting between the mass of a substance and the amount in moles, which is essential for stoichiometric calculations in chemical reactions.