What is the foam?
MOLALITY is a ratio used in analytical chemistry to quantitatively expressing concentration of chemical solution. When the solution is made, it contains a certain amount of dissolved substance, a substance that is dissolved on the liquid. The liquid to which is dissolved is dissolved is known as the solvent. The molite (m) is the amount of solut, expressed in units called moths, divided by a solvent mass in kilograms.
In order to understand the molite, it is necessary to understand the pier, the basic chemical unit. One mol substance is defined as containing the same number of units as the number of atoms in 12 grams (g) of the carbon-12 element. This very high number is known as Avogadrov's number. Mole carbon-12, according to definition, ie weighs 12 grams.
All other atomic materials of the elements are based on the carbon-12 carbon standard. One unit of unified atomic weight (U) equals 1/12 of the mass of carbon-12-12-12 atom weighs 12 U. The mole is defined in this way purely for comfort. Mathematically this is knownOan that the weight of one pier of the compound in grams equals its molecular matter in the u.
Molecular weight of the compound can be found by adding atomic masses of the atoms of the ingredients. For example, water consists of two hydrogen atoms and one oxygen atom. Each hydrogen atom has an atomic matter of about 1.008 U and oxygen is about 15.999 U. The water mass is about 18.015 U and the weight of one mole of water is 18.015 g.
The amount of solut in the chemical solution is measured in the moths. One mole of salt, also known as sodium chloride, has a weight of about 58.5 g. If 58.5 g or one mole of salt was dissolved in one kilogram of water, the resulting solution would have a molality of 1 m.
A similar and widely used level of concentration is a molarity (M). Molarity, unlike morality, is based on volume: it is the beginningEt moths of solut in one liter of solution. Since the volume of the solution may change, expand or counter with temperature changes, the molarity is not always a reliable measure of concentration. Moliality, which is based on constant weight, is often more useful in situations where the solution temperature is variable.