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Avogadro's number

The Columbia Encyclopedia, 6th ed. | 2011 | Copyright

Avogadro's number ävōgä´drō [for Amedeo Avogadro ], number of particles contained in one mole of any substance; it is equal to 602,252,000,000,000,000,000,000, or in scientific notation, 6.02252×10 ²³ . For example, 12.011 grams of carbon (one mole of carbon) contains 6.02252×10 ²³ carbon atoms, and 180.16 grams of glucose, C ₆ H ₁₂ O ₆ , contains 6.02252×10 ²³ molecules of glucose. Avogadro's number is determined by calculating the spacing of the atoms in a crystalline solid through X-ray methods and combining this data with the measured volume of one mole of the solid to obtain the number of molecules per molar volume.

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"Avogadro's number." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>.

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Avogadro constant

A Dictionary of Earth Sciences | 1999 | | Copyright

Avogadro constant (Avogadro number) The number of molecules, atoms, or ions in one mole of a substance: 6.02252 × 10²³ per mol. It is derived from the number of atoms of the pure isotope ¹²C in 12 grams of that substance and is the reciprocal of atomic mass in grams.

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AILSA ALLABY and MICHAEL ALLABY. "Avogadro constant." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "Avogadro constant." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O13-Avogadroconstant.html

AILSA ALLABY and MICHAEL ALLABY. "Avogadro constant." A Dictionary of Earth Sciences. 1999. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-Avogadroconstant.html

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Avogadro constant

A Dictionary of Ecology | 2004 | | Copyright

Avogadro constant(Avogadro number) The number of molecules, atoms, or ions in one mole of a substance: 6.02252 × 10²³ per mol. It is derived from the number of atoms of the pure isotope ¹²C in 12 grams of that substance and is the reciprocal of atomic mass in grams.

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MICHAEL ALLABY. "Avogadro constant." A Dictionary of Ecology. 2004. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "Avogadro constant." A Dictionary of Ecology. 2004. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O14-Avogadroconstant.html

MICHAEL ALLABY. "Avogadro constant." A Dictionary of Ecology. 2004. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O14-Avogadroconstant.html

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