How big is 1MO?

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12g carbon with a relative atomic mass of 12 contains about 6.02× 1023 carbon atoms.

Scientifically, the collective containing 6.02× 1023 particles is regarded as a unit, which is called Mo. Mol is the unit (symbol n) representing the quantity of a substance, which is referred to as Mo for short, and the unit symbol is mol.

The carbon atom of 1mol contains 6.02× 1023 carbon atoms, and its mass is 12g.

The sulfur atom of 1mol contains 6.02× 1023 sulfur atoms with a mass of 32g. Similarly, the mass of any atom in 1 mol is in grams, which is numerically equal to the relative atomic mass (molecular weight) of the atom.

Similarly, we can calculate that the mass of any substance in 1 mol is in grams, which is numerically equal to the molecular formula of the substance.

The molecular formula of water is 18, the mass of 1mol is 18g, and it contains 6.02× 1023 water molecules.

Generally, the mass of 1mol is called the molar mass of the substance (symbol m), and the unit of molar mass is g/mol (symbol "g/mol"). For example, the molar mass of water is 18g/mol, written as m (H2O) = 18g/mol.