The entire mass of the atoms required to form a molecule per mole, expressed in grams, is what makes up the molar mass, also known as the molecular weight. Grams per mole are used to measure molar mass.
The molar mass of a substance is the weight of one mole of that substance. How many grams are contained in one mole of a specific chemical is what is meant by the term "molar mass." The atomic masses used to calculate the molar mass are listed in the periodic table. The Avogadro's number indicates how many particles are present in each mole.
Avogadro's number (6.022 x 1023) of molecules (or formula units) make up one mole of a substance (ionic compound). The mass of 1 mole of a chemical is indicated by its molar mass. It provides you with the amount of grams per mole of a substance, to put it another way.
Methane, CH4, has a molecular weight of 16.0 g/mole and a mass of 71.6 g.
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