The molar mass of an element can typically be found at the bottom of each element’s square on the periodic table. It is usually expressed in grams per mole (g/mol) and represents the mass of one mole of atoms of that element. For example, if you look at the square for carbon, you will find its molar mass listed as approximately 12.01 g/mol.
The periodic table is arranged in a way that the elements are organized by their atomic number, which is the number of protons in the nucleus of an atom. The molar mass is derived from the atomic weight, which takes into account the isotopic distribution of the element’s atoms. Thus, it gives a more accurate representation of the mass of a mole of that element, making it essential for calculations in chemistry, such as stoichiometry.