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Mole unit - Definition | A Wisdom Archive on Mole unit - Definition | | Mole unit - Definition A selection of articles related to Mole unit - Definition | |
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Mole unit, Mole unit - Definition, Mole unit - Elementary entities, Mole unit - Example calculation, Mole unit - History, Mole unit - Utility of moles, Avogadro's number, List of particles, Chemistry, Einstein (unit), Physics, Stoichiometry, Mole Day, Molarity, CODATA
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ARTICLES RELATED TO Mole unit - Definition | | | |  Mole unit - Definition: Encyclopedia II - Mole unit - DefinitionA mole is the amount of substance of a system which contains as many elementary entities as there are atoms in 12 grams of carbon 12, where the carbon 12 atoms are unbound, at rest and in their ground state. [1] The number of atoms in 0.012 kilogram of carbon 12 is known as Avogadro's number. It is approximately 6.0221415×1023 (2002 CODATA value).
A mole is a dimensionless name for an integer, much like dozen or googol. Although the exact value of the mole is not known at present, it is equal to Avogadro's number, ...
See also:Mole unit, Mole unit - Definition, Mole unit - Elementary entities, Mole unit - History, Mole unit - Utility of moles, Mole unit - Example calculation Read more here: » Mole unit: Encyclopedia II - Mole unit - Definition |
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| | | | Mole unit - Definition: Encyclopedia II - Mole unit - Definition A mole is the amount of substance of a system which contains as many elementary entities as there are atoms in 12 grams of carbon 12, where the carbon 12 atoms are unbound, at rest and in their ground state. [1] The number of atoms in 12 grams (or, 0.012 kilograms) of carbon 12 is known as Avogadro's number. It is approximately 6.0221415×1023 (2002 CODATA value).
A mole is a dimensionless name for an integer, much like dozen or googol. Although the exact value of the mole is not known at present, it is equal to Avogadro's number, ...
See also:Mole unit, Mole unit - Definition, Mole unit - Elementary entities, Mole unit - History, Mole unit - Utility of moles, Mole unit - Example calculation Read more here: » Mole unit: Encyclopedia II - Mole unit - Definition |
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| | | | Mole unit - Definition: Encyclopedia II - Mole unit - Elementary entities When the mole is used to specify the amount of a substance, the kind of elementary entities (particles) in the substance must be identified. The particles can be atoms, molecules, ions, formula units, electrons, or other particles. For example, one mole of water is equivalent to about 18 grams of water and contains one mole of H2O molecules, but three moles of atoms (two moles H and one mole O).
When the substance of interest is a gas, the particles are usually molecules. However, the noble gases (He, Ar, Ne, Kr, Xe, Rn) ar ...
See also:Mole unit, Mole unit - Definition, Mole unit - Elementary entities, Mole unit - History, Mole unit - Utility of moles, Mole unit - Example calculation Read more here: » Mole unit: Encyclopedia II - Mole unit - Elementary entities |
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| | | | Mole unit - Definition: Encyclopedia II - Mole unit - History The name mole is attributed to Wilhelm Ostwald who introduced the concept in the year 1902. He used it to express the gram molecular weight of a substance. So, for example, 1 mole of hydrochloric acid (HCl) has a mass of 36.5 grams (atomic weights Cl: 35.5 u, H: 1.0 u).
Prior to 1959 both the IUPAP and IUPAC used oxygen to define the mole, the chemists defining the mole as the number of atoms of oxygen which had mass 16 g, the physicists using a similar definition but with the oxygen-16 isotope only. The two organizations agreed in ...
See also:Mole unit, Mole unit - Definition, Mole unit - Elementary entities, Mole unit - History, Mole unit - Utility of moles, Mole unit - Example calculation Read more here: » Mole unit: Encyclopedia II - Mole unit - History |
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