The molar mass of barium (Ba) is a fundamental property that plays a crucial role in understanding its behavior and applications. Calculated as the sum of the masses of its constituent atoms, barium has a molar mass of 137.33 g/mol. This value is derived from the atomic weight of barium, which is the weighted average of its naturally occurring isotopes. Understanding the molar mass of barium provides insights into stoichiometric calculations, chemical reactions involving barium, and the properties of its compounds, making it an essential parameter for chemists and material scientists.