Avogadro constant
E5003
The Avogadro constant is the fundamental physical constant that specifies the number of constituent particles, usually atoms or molecules, in one mole of a substance.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Avogadro constant canonical | 9 |
| Avogadro's number | 2 |
| Avogadro number | 1 |
| Avogadro's law | 1 |
| Loschmidt constant | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T80147 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Avogadro constant Context triple: [On the Motion of Small Particles Suspended in Liquids at Rest Required by the Molecular-Kinetic Theory of Heat, relatesToConstant, Avogadro constant]
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A.
Bose–Einstein statistics
Bose–Einstein statistics is a quantum statistical framework that describes the distribution and collective behavior of indistinguishable bosons, underpinning phenomena such as Bose–Einstein condensation.
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B.
Linus Pauling
Linus Pauling was an American chemist, peace activist, and two-time Nobel Prize laureate renowned for his pioneering work on the nature of the chemical bond and molecular biology.
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C.
Boric
Boric is the surname of Gabriel Boric, the Chilean politician who became one of the world’s youngest heads of state when he was elected President of Chile.
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D.
Feynman–Hellmann theorem
The Feynman–Hellmann theorem is a result in quantum mechanics that relates the derivative of an energy eigenvalue with respect to a parameter in the Hamiltonian to the expectation value of the corresponding derivative of the Hamiltonian.
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E.
Einstein coefficients
Einstein coefficients are parameters in quantum theory that quantify the probabilities of absorption, spontaneous emission, and stimulated emission of radiation by atoms or molecules.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Avogadro constant Target entity description: The Avogadro constant is the fundamental physical constant that specifies the number of constituent particles, usually atoms or molecules, in one mole of a substance.
-
A.
Bose–Einstein statistics
Bose–Einstein statistics is a quantum statistical framework that describes the distribution and collective behavior of indistinguishable bosons, underpinning phenomena such as Bose–Einstein condensation.
-
B.
Linus Pauling
Linus Pauling was an American chemist, peace activist, and two-time Nobel Prize laureate renowned for his pioneering work on the nature of the chemical bond and molecular biology.
-
C.
Boric
Boric is the surname of Gabriel Boric, the Chilean politician who became one of the world’s youngest heads of state when he was elected President of Chile.
-
D.
Feynman–Hellmann theorem
The Feynman–Hellmann theorem is a result in quantum mechanics that relates the derivative of an energy eigenvalue with respect to a parameter in the Hamiltonian to the expectation value of the corresponding derivative of the Hamiltonian.
-
E.
Einstein coefficients
Einstein coefficients are parameters in quantum theory that quantify the probabilities of absorption, spontaneous emission, and stimulated emission of radiation by atoms or molecules.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
SI defining constant
ⓘ
fundamental constant ⓘ physical constant ⓘ |
| appliesTo |
atoms in 12 grams of carbon-12
ⓘ
constituent particles ⓘ |
| enables | conversion between number of particles and amount of substance ⓘ |
| hasApproximateValue | 6.02214076×10^23 ⓘ |
| hasCODATAValue | 6.02214076×10^23 mol^−1 ⓘ |
| hasDimension | inverse amount of substance ⓘ |
| hasExactValue | 6.02214076×10^23 ⓘ |
| hasStatus | exact in SI since 2019 ⓘ |
| hasSymbol |
L
ⓘ
N_A ⓘ |
| hasUncertainty | zero in SI definition ⓘ |
| hasUnit | mol^−1 ⓘ |
| isAlsoCalled |
Avogadro constant
ⓘ
surface form:
Avogadro number
|
| isCategory | microscopic to macroscopic conversion factor ⓘ |
| isDefinedAs | number of constituent particles in one mole of substance ⓘ |
| isDefinedBy | fixed numerical value in SI ⓘ |
| isListedIn | CODATA recommended values of the fundamental physical constants ⓘ |
| isMeasuredBy |
X-ray crystal density method
ⓘ
silicon sphere experiments ⓘ |
| isNamedAfter | Amedeo Avogadro ⓘ |
| isPartOf |
International System of Units
ⓘ
Boltzmann constant ⓘ
surface form:
SI base unit definitions
|
| isRelatedTo |
Boltzmann constant
ⓘ
Faraday constant ⓘ Planck constant ⓘ gas constant ⓘ |
| isStandardNotationFor | number of entities per mole ⓘ |
| isUsedIn |
Avogadro’s law calculations
ⓘ
chemistry ⓘ ideal gas law formulations ⓘ molar mass calculations ⓘ physics ⓘ statistical mechanics ⓘ thermodynamics ⓘ |
| isUsedToDefine | mole ⓘ |
| relatesTo |
amount of substance
ⓘ
atoms ⓘ mole ⓘ molecules ⓘ |
| wasHistoricallyDeterminedFrom |
electrolysis experiments
ⓘ
properties of gases ⓘ |
| wasPreviouslyMeasuredAs | approximately 6.022×10^23 mol^−1 ⓘ |
| wasRedefinedIn | 2019 SI redefinition ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Avogadro constant Description of subject: The Avogadro constant is the fundamental physical constant that specifies the number of constituent particles, usually atoms or molecules, in one mole of a substance.
Referenced by (14)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Avogadro number
CODATA recommended values of the fundamental physical constants
→
includesConstant
→
Avogadro constant
ⓘ
CODATA recommended values of the fundamental physical constants
→
includesConstant
→
Avogadro constant
ⓘ
this entity surface form:
Loschmidt constant
this entity surface form:
Avogadro's law
this entity surface form:
Avogadro's number