Avogadro's number


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Related to Avogadro's number: Avogadro's constant

number

 [num´ber]
a symbol, as a figure or word, expressive of a certain value or a specified quantity determined by count.
atomic number (Z) a number expressive of the number of protons in an atomic nucleus, or the positive charge of the nucleus expressed in terms of the electronic charge.
Avogadro's number (N) (NA) the number of molecules in one mole of a substance: 6.023 × 1023. Called also Avogadro's constant.
CT number the density assigned to a voxel in a CAT scan on an arbitrary scale on which air has a density −1000; water, 0; and compact bone +1000. See also hounsfield unit.
mass number (A) the number of nucleons (protons plus neutrons) in the atom of a nuclide; generally indicated by a superscript preceding the symbol of a chemical element (e.g., 131I), denoting a specific isotope.
oxidation number a number assigned to each atom in a molecule or ion that represents the number of electrons theoretically gained (positive oxidation numbers) or lost (negative numbers) in converting the atom to the elemental form.

Avogadro's number (NA)

the number of atoms in exactly 12 g of the isotope of carbon 12C, or 6.02 × 1023. One mole of any monoatomic element contains this number of atoms and one mole of any polyatomic element or molecule contains this number of molecules.

Avogadro's number,

n.pr the number of molecules that exist in one mole: 6.0225 × 1023.

number

a symbol, as a figure or word, expressive of a certain value or a specified quantity determined by count.

atomic number
a number expressive of the number of protons in an atomic nucleus, or the positive charge of the nucleus expressed in terms of the electronic charge; symbol A.
Avogadro's number
see avogadro's number.
mass number
see mass number.
Reynold's number
References in periodicals archive ?
For if it could be shown that the homeopathic phenomenon does not exist, that medicines do not in fact have the power to elicit or provoke the same symptoms that they help to cure, and that remedies diluted beyond the level of Avogadro's number are simply inert and have no effect of any kind, then he would be entirely right to insist that such beliefs are utterly groundless, that those who persist in them are mired in wishful thinking, and that public funds should not be provided for the medical care of indigent people based on them, or even for further research as to their efficacy, since more than enough would already have been carried out to disprove the need or value of proceeding any further along this path.
where N is Avogadro's number, a is the molecular surface area of the probe, and [[gamma].
Because the dilution factors in homeopathy beyond 12C exceed Avogadro's number, skeptics insist that this eliminates the possibility of any scientifically curative action.
where M is the molecular weight of the repeat unit, NA is Avogadro's number, a = <d100>1/[square root of (term)]3 is the dimension of the hexagonal unit cell, and c = [d.
Now, Hahnemann formulated his ideas and did not know about Avogadro or Avogadro's number, which is the basis of the dilutional limit.
where fo and F are the correction factors, y is the surface tension, NA is Avogadro's number, kB is Boltzmann's constant, T is the temperature, PD is the bubble pressure, and Pc is the pressure of polymer matrix.