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unit:U

http://qudt.org/vocab/unit/U
Types: qudt:Unit
PredicateObject
rdf:type qudt:Unit
dcterms:description The unified atomic mass unit (symbol: \(u\)) or dalton (symbol: \(Da\)) is the standard unit that is used for indicating mass on an atomic or molecular scale (atomic mass). It is defined as one twelfth of the mass of an unbound neutral atom of carbon-12 in its nuclear and electronic ground state,[ and has a value of \(1.660538921(73) \times 10^{-27} kg\). One dalton is approximately equal to the mass of one nucleon; an equivalence of saying \(1 g mol^{-1}\). The CIPM have categorised it as a 'non-SI unit' because units values in SI units must be obtained experimentally.
qudt:conversionMultiplier 0.00000000000000000000000000166053878283
qudt:conversionMultiplierSN 1.66053878283E-27
qudt:dbpediaMatch http://dbpedia.org/resource/Atomic_mass_unit
qudt:exactMatch
qudt:hasDimensionVector qkdv:A0E0L0I0M1H0T0D0
qudt:hasQuantityKind quantitykind:Mass
qudt:iec61360Code “0112/2///62720#UAB083”
qudt:informativeReference
qudt:omUnit http://www.ontology-of-units-of-measure.org/resource/om-2/unifiedAtomicMassUnit
qudt:scalingOf unit:KiloGM
qudt:symbol “u”
qudt:ucumCode “u”^^qudt:UCUMcs
qudt:uneceCommonCode “D43”
rdfs:isDefinedBy http://qudt.org/3.1.11/vocab/unit
rdfs:label
  • “Unified Atomic Mass Unit”
  • “Unified Atomic Mass Unit”@en
Generated 2026-02-20T09:46:38.851-05:00