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- Molar_mass_constant abstract "The molar mass constant, symbol Mu, is a physical constant which relates relative atomic mass and molar mass. Its value is defined to be 1 g/mol in SI units.The molar mass constant is important in writing dimensionally correct equations. It is common to see phrases such asThe molar mass of an element is the atomic weight in grams per mole.However, atomic weight, ie, relative atomic mass, is a dimensionless quantity, and cannot take the units of grams per mole. Formally, the operation is the multiplication by a constant which has the value 1 g/mol, that is the molar mass constant.The molar mass constant is unusual (but not unique) among physical constants by having an exactly defined value rather than being measured experimentally. It is fixed by the definitions of the mole and of relative atomic mass. From the definition of the mole, the molar mass of carbon 12 is exactly 12 g/mol. From the definition of relative atomic mass, the relative atomic mass of carbon 12, that is the atomic weight of a sample of pure carbon 12, is exactly 12. The molar mass constant is given byThe speed of light, the electric constant and the magnetic constant are other examples of physical constants whose values are fixed by the definitions of the International System of Units (SI), in these cases by the definitions of the metre and the ampere.The molar mass constant is also related to the mass of a carbon-12 atom in grams:Hence the uncertainty in the value of the mass of a carbon-12 atom in SI units is governed by the uncertainty in the Avogadro constant: the CODATA 2006 recommended value is 1.992 646 54(10)×10−26 kg (ur = 5×10−8).The relatively simple value of the molar mass constant in SI units is also a consequence of the way in which the International System of Units is defined. It is possible to quote the value of the molar mass constant in other units: for example, it is equal to (1/453.592 37) lb/mol ~ 2.204 623 262 × 10−3 lb/mol.".
- Molar_mass_constant wikiPageID "13737856".
- Molar_mass_constant wikiPageRevisionID "592811279".
- Molar_mass_constant hasPhotoCollection Molar_mass_constant.
- Molar_mass_constant subject Category:Amount_of_substance.
- Molar_mass_constant subject Category:Physical_constants.
- Molar_mass_constant type Abstraction100002137.
- Molar_mass_constant type Cognition100023271.
- Molar_mass_constant type Concept105835747.
- Molar_mass_constant type Constant105858936.
- Molar_mass_constant type Content105809192.
- Molar_mass_constant type Idea105833840.
- Molar_mass_constant type PhysicalConstants.
- Molar_mass_constant type PsychologicalFeature100023100.
- Molar_mass_constant type Quantity105855125.
- Molar_mass_constant comment "The molar mass constant, symbol Mu, is a physical constant which relates relative atomic mass and molar mass. Its value is defined to be 1 g/mol in SI units.The molar mass constant is important in writing dimensionally correct equations. It is common to see phrases such asThe molar mass of an element is the atomic weight in grams per mole.However, atomic weight, ie, relative atomic mass, is a dimensionless quantity, and cannot take the units of grams per mole.".
- Molar_mass_constant label "Constante de masa molar".
- Molar_mass_constant label "Molar mass constant".
- Molar_mass_constant sameAs Constante_de_masa_molar.
- Molar_mass_constant sameAs m.03cgq4x.
- Molar_mass_constant sameAs Q6895682.
- Molar_mass_constant sameAs Q6895682.
- Molar_mass_constant sameAs Molar_mass_constant.
- Molar_mass_constant wasDerivedFrom Molar_mass_constant?oldid=592811279.
- Molar_mass_constant isPrimaryTopicOf Molar_mass_constant.