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Concentration

Definition

noun

(1) The measure of the amount of a sub-component (especially solute) in a solution.

(2) The ratio of the mass or volume of a substance (solute) to the mass or volume of the solvent or solution.

(3) The increase of strength of a pharmaceutical preparation.

(4) The act or process of focusing or fixing of attention.

(5) The product of something concentrated.


Supplement

In chemistry, concentration of a solute in a solution can be done by chemical means, e.g. evaporation of the solvent, diffusion, and purification. In pharmacology, concentration of a pharmaceutical preparation can be done by extraction, precipitation and drying of the crude active agent.


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Amino Acid Titration

... is at it´s fully protonated form when the solution is at it´s lowest pH value. How can this be, when the definition of a low pH value is a high concentration of H+? Why isn´t the amino acid fully deprotonated instead? And when the amino acid is at it´s highest pH value - why is it fully deprotonated ...

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by micron66
Tue Sep 22, 2009 7:01 am
 
Forum: Molecular Biology
Topic: Amino Acid Titration
Replies: 1
Views: 3

How does high salt conc. influence denaturation kinetics

How does high salt concentration influence denaturation kinetics of DNA? Explain your reasoning.

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by HelloKitty
Tue Sep 22, 2009 2:51 am
 
Forum: Molecular Biology
Topic: How does high salt conc. influence denaturation kinetics
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Views: 4

does excersize change the salt uptake patterns

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by david23
Fri Sep 18, 2009 7:36 pm
 
Forum: General Discussion
Topic: does excersize change the salt uptake patterns
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Views: 16

Metal chelate chromatography

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by JackBean
Mon Sep 14, 2009 8:05 pm
 
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Topic: Metal chelate chromatography
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School and beyond question?

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by Piester00
Fri Aug 28, 2009 11:04 pm
 
Forum: General Discussion
Topic: School and beyond question?
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