Superficial destruction of a surface by friction, pressure, ulceration, or trauma. The wearing away of a tooth by chemical or abrasive action. Also called odontolysis. erosion. The gradual wearing away of land surface materials, especially rocks, sediments, and soils, by the action of water, wind, or a glacier.
In chemistry, the molar mass M is a physical property defined as the mass of a given substance (chemical element or chemical compound) divided by its amount of substance. The base SI unit for molar mass is kg / mol.
Now we can find the molar mass of each element. For carbon, we multiply its molar mass of 12.0107 grams per mol by two because we have two carbon atoms. This equals 24.0214 grams per mole. For hydrogen, we multiply the molar mass of 1.00794 by 4.