Avogadro's number: Difference between revisions
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<onlyinclude>'''Avogadro's number''', N<sub>A</sub>, represents the number of [[atom]]s or [[molecule]]s that are in a [[mole]] of a substance. This number is 6.0221415 x 10<sup>23</sup>.<ref | [[File:Electron cloud2.gif|framed|40px|right|Figure 1. A drawing depicting what an atom looks like. N<sub>A</sub> amount of these exist in each mole of any element.<ref>"The electron cloud" internet: http://letstalkaboutscience.wordpress.com/2012/02/16/the-electron-cloud.</ref>]] | ||
<onlyinclude>'''Avogadro's number''', N<sub>A</sub>, represents the number of [[atom]]s or [[molecule]]s that are in a [[mole]] of a substance. This number is 6.0221415 x 10<sup>23</sup>.<ref>D. Fenna, A Dictionary of weights, measures, and units. Oxford: Oxford University Press, 2004.</ref> Just like 12 things are in a "dozen", 6.0221415 x 10<sup>23</sup> atoms or molecules (see Figure 1) are in a "mole".</onlyinclude> An N<sub>A</sub> amount of anything is an extremely large number of it, therefore it is only useful when describing amounts of tiny things like atoms or molecules. | |||
This number is extremely important in chemistry and even has a special day of its celebration, known as "Mole Day." It begins at 6:02:21 AM on October 23<sup>rd</sup> (6:02:21 10/23).<ref>How stuff works, ''What is Avogadro's number?'' [Online], Available: http://science.howstuffworks.com/avogadros-number.htm</ref> | |||
==For Further Reading== | |||
*[[Atom]] | |||
*[[Molecule]] | |||
*[[Element]] | |||
*[[Mole]] | |||
*[[Molar mass]] | |||
==References== | ==References== | ||
{{reflist}} | {{reflist}} | ||
[[Category:Uploaded]] | [[Category:Uploaded]] | ||
Revision as of 21:33, 21 August 2018
Avogadro's number, NA, represents the number of atoms or molecules that are in a mole of a substance. This number is 6.0221415 x 1023.[2] Just like 12 things are in a "dozen", 6.0221415 x 1023 atoms or molecules (see Figure 1) are in a "mole". An NA amount of anything is an extremely large number of it, therefore it is only useful when describing amounts of tiny things like atoms or molecules.
This number is extremely important in chemistry and even has a special day of its celebration, known as "Mole Day." It begins at 6:02:21 AM on October 23rd (6:02:21 10/23).[3]
For Further Reading
References
- ↑ "The electron cloud" internet: http://letstalkaboutscience.wordpress.com/2012/02/16/the-electron-cloud.
- ↑ D. Fenna, A Dictionary of weights, measures, and units. Oxford: Oxford University Press, 2004.
- ↑ How stuff works, What is Avogadro's number? [Online], Available: http://science.howstuffworks.com/avogadros-number.htm