# Avogadro's number

Also found in: Dictionary, Thesaurus, Medical, Legal, Financial, Acronyms, Wikipedia.

Related to Avogadro's number: Avogadro's constant

## Avogadro's number

**Avogadro's number**(ävōgäˈdrō) [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.

The Columbia Electronic Encyclopedia™ Copyright © 2022, Columbia University Press. Licensed from Columbia University Press. All rights reserved.

## Avogadro's number

[¦a·və¦gäd·drōz ‚nəm·bər] (physics)

The number (6.02 × 10

^{23}) of molecules in a gram-molecular weight of a substance.McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

Want to thank TFD for its existence? Tell a friend about us, add a link to this page, or visit the webmaster's page for free fun content.

Link to this page: