D'Alembert's principle: Difference between revisions

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[[Image:Finlandia vodka.jpg|thumb|300px|Volume percent = 40.]]
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'''Volume percent''' is a common expression of a [[solution]]'s [[concentration]]. It is defined as:
 
:<math>\textrm{volume\ percent} = \frac{\textrm{volume\ of\ solute}}{\textrm{volume\ of\ solution}}*100\%</math>
 
[[Volume]] percent is usually used when the solution is made by mixing two [[fluid]]s, such as [[liquids]] or [[gases]]. However, [[percentages]] are only additive for [[ideal gas]]es.<ref>[http://www.chembuddy.com/?left=concentration&right=volume-volume-percentage ''Volume-volume percentage''], [http://www.chembuddy.com/?left=about Chembuddy] [[website]]</ref>
 
In the case of a mixture of ethanol and water, which are [[miscible]] in all proportions, the designation of solvent and solute is arbitrary. The volume of such a mixture is slightly less than the sum of the volumes of the components. Thus, by the above definition, the term "40% alcohol by volume" refers to a mixture of 40 volume units of ethanol with enough water to make a final volume of 100 units, rather than a mixture of 40 units of ethanol with 60 units of water.
 
==See also==
*[[Alcohol by volume]]
*[[Alcohol proof]]
*[[Alcohol meter]]
*[[Apparent molar property]]
*[[Percentage]]
 
{{Wiktionary|Volume percent}}
 
==References==
<references/>
 
{{refimprove|date=August 2007}}
 
[[Category:Analytical chemistry]]
 
{{Chem-stub}}

Latest revision as of 20:12, 2 December 2014

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