Avogadro's number
The Columbia Encyclopedia, Sixth Edition | Date: 2008
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.
Author not available, AVOGADRO'S NUMBER.,
The Columbia Encyclopedia, Sixth Edition 2008
The Columbia Encyclopedia, Sixth Edition. Copyright 2008 Columbia University Press
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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 ... atom s, ion s, or molecule s, depending on the nature of the substance and the character of the reaction (if any). Avogadro's law ; law of mass action ; stoichiometry ... .
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