What is a percentage of concentration?
In chemistry, the term “concentration” concerns the amount of one component in the substance, due to the total amount of all components in this substance. There are a number of ways to list concentration, the most common of them is some form of “percentage concentration”. For example, on a solid fertilizer bag, the percentage of nitrogen, phosphorus and potassium are generally given in terms of weight (W/W) or "percentage of weight". The alcohol in the wine is given volume volume (order/ob.) Or "volume percentage". Physical solution solution-half dissolved in water-is listed as a percentage of weight (w/v) percentage per volume volume (w/v). For example, sea salt contains about 98 percent of sodium chloride (NaCl) plus traces of other minerals. Every 10 ounces (OZ) (283.5 g) of sea salt therefore contain about 9.8 oz (277.83 g) NaCl. The percentage of weight does not need any units, because sodium chloride in the numerator is in ounces and the total weight in the denominator is also in ounces - ounce cancels ounce. If instead of £ 100 (45.36 kg) of the seabelingSalts contain £ 98 (44.45 kg) NaCl and units will disappear again - pounds of pounds.
Likewise, 10 % V/V Glycerin solution in water does not require any units, whether the volume is one drama (DR) or one liter (L). The units in the numerator are again the same as the units in the denominator; Will be canceled. On the other hand, the sugar solution worth 15 percent has a weight without weight in a net clean unit, but a unit of volume V denominator. It is defined as a percentage, somewhat artificially; 1 % solution contains 1 gram per 100 milliliters (ml) of solution. This form of percentage concentration is used in biological sciences.
Sometimes, as in Cconcentration ASE with the active ingredient contained in the medicine - whether tablet, salve or syrup - is compared with strength. It is similar to alcoholic beverages, although the concentration or strength of the "ghosts" is generally given as "evidence". This term is very closely related to the percentage concentration; There are 80 evidence in the USEmerously equal to 40 volume percent. However, this term was first defined in the UK as 7/4 and not 1/2, a percentage of alcohol concentration. This is because the suitability of the ghosts has been proven by the ignition with a gunpowder, to which it first occurs successfully at a concentration of more than 57 volume-percentage-approximately 7/4 ratio of the desired water to water.