Avogadro's number

Avogadro's number
the constant, 6.02 × 1023, representing the number of atoms in a gram atom or the number of molecules in a gram molecule. Symbol: N Also called Avogadro constant. Cf. Loschmidt's number.
[1925-30; see AVOGADRO'S LAW]

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Number of units in one mole of any substance (defined as its molecular weight in grams), equal to 6.

0221367 × 1023. The units may be electrons, atoms, ions, or molecules, depending on the nature of the substance and the character of the reaction (if any). See also Avogadro's law; law of mass action; stoichiometry.

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      number of units in one mole of any substance (defined as its molecular weight in grams), equal to 6.02214179 × 1023. The units may be electrons, atoms, ions, or molecules, depending on the nature of the substance and the character of the reaction (if any). See also Avogadro's law.

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Universalium. 2010.

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  • Avogadro's number — or Avogadro number .gäd (.)rō , .gad n the number 6.023 × 1023 indicating the number of atoms or molecules in a mole of any substance compare AVOGADRO S LAW * * * (N) (NA) the number of molecules in one mole of a substance: 6.023 Ч 1023 …   Medical dictionary

  • Avogadro’s number — Avogadro konstanta statusas T sritis fizika atitikmenys: angl. Avogadro’s constant; Avogadro’s number vok. Avogadro Konstante, f; Avogadrosche Konstante, f rus. постоянная Авогадро, f; число Авогадро, n pranc. constante d’Avogadro, f; nombre… …   Fizikos terminų žodynas

  • Avogadro's number —    , Avogadro constant (NA)    a unit of relative quantity equal to the number of atoms or molecules per mole of a substance. The currently accepted value is 6.022 141 79 x 1023 per mole with an uncertainty of 0.000 000 47 x 1023 per mole (about… …   Dictionary of units of measurement

  • Avogadro's number — number indicating the quantity of atoms in a gram atom or molecules in a gram molecule (Chemistry) …   English contemporary dictionary

  • Avogadro's number — noun Etymology: Count Amedeo Avogadro Date: 1924 the number 6.022 × 1023 indicating the number of atoms or molecules in a mole of any substance called also Avogadro number …   New Collegiate Dictionary

  • Avogadro's number — /ævəˌgædroʊz ˈnʌmbə / (say avuh.gadrohz numbuh) noun the number of atoms or molecules in a mole of substance; 6.02252 × 1023 per mole. Also, Avogadro s constant. {See Avogadro s hypothesis} …  

  • Avogadro's number — noun The number of atoms present in 0.012 kilograms of isotopically pure Carbon 12, being 6.0221415 x 10. By definition, the number of elementary entities (atoms or molecules) comprising one mole of a given substance. Syn: Avogadro constant …   Wiktionary

  • Avogadro's number — A′voga′dro s num′ber n. chem. the constant, 6.02 x 1023, representing the number of atoms in a gram atom or the number of molecules in a gram molecule Symbol: N II, 6) Also called A′voga′dro con stant. • Etymology: 1925–30; after A. Avogadro …   From formal English to slang

  • Avogadro's number — noun the number of molecules in a mole of a substance (approximately 602,250,000,000,000,000,000,000) • Syn: ↑Avogadro number • Hypernyms: ↑constant …   Useful english dictionary

  • Avogadro constant — or Avogadro number n. the number of molecules contained in one mole (molecular weight in grams) of a substance, equal to 6.022137 × 1023: symbol, N, NA, or L: often Avogadro s number * * * …   Universalium

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