In chemistry, concentration is the measure of how much of a given substance there is mixed with another substance. This can apply to any sort of chemical mixture, but most frequently is used in relation to solutions, where it refers to the amount of solute dissolved in a solvent. To concentrate a solution, one must add more solute, or reduce the amount of solvent (for instance, by selective evaporation). By contrast, to dilute a solution, one must add more solvent, or reduce the amount of solute. ...

Including:

• Concentration - Qualitative notation
• Concentration - Quantitative notation
• Concentration - Mass percentage
• Concentration - Mass-volume percentage
• Concentration - Volume-volume percentage
• Concentration - Molarity
• Concentration - Molality
• Concentration - Molinity
• Concentration - Normality
• Concentration - Mole fraction
• Concentration - Formal
• Concentration - Parts-per notation
• Concentration - Techniques used to determine concentration
• Concentration - Table of concentration measures

Read more here: » Concentration: Encyclopedia - Concentration

Quantitative notation of concentration is far more informative and useful from a scientific point of view. There are a number of different ways to quantitatively express concentration; the most common are listed below. Note: Many units of concentration require measurement of a substance's volume, which is variable depending on ambient temperature and pressure. Unless otherwise stated, all the following measurements are assumed to be at standard state temperature and pressure (that is, 25 degrees Celsius at 1 atmosphere or 101.325 kPa).

See also:

Concentration, Concentration - Qualitative notation, Concentration - Quantitative notation, Concentration - Mass percentage, Concentration - Mass-volume percentage, Concentration - Volume-volume percentage, Concentration - Molarity, Concentration - Molality, Concentration - Molinity, Concentration - Normality, Concentration - Mole fraction, Concentration - Formal, Concentration - Parts-per notation, Concentration - Techniques used to determine concentration, Concentration - Table of concentration measures

Read more here: » Concentration: Encyclopedia II - Concentration - Quantitative notation