History of chemistry 1808, certain of his central ideas were soon adopted by most chemists. However, uncertainty persisted for half a century about how atomic theory was to be configured and applied to concrete situations; chemists in different countries developed several different incompatible atomistic systems. A paper that suggested a way out of this difficult situation was published as early as 1811 by the Italian physicist Amedeo Avogadro (1776-1856), who hypothesized that equal volumes of gases at the same temperature and pressure contain equal numbers of molecules, from which it followed that relative molecular weights of any two gases are the same as
Amagat's law Amagat's law Amagat's law or the Law of Partial Volumes describes the behaviour and properties of mixtures of ideal (as well as some cases of non-ideal) gases. Of use in chemistry and thermodynamics. Amagat's law states that the extensive volume "V = N·v" of a gas mixture is equal to the sum of volumes "V" of the "K" component gases, if the temperature "T" and the pressure "p" remain the same: This is the experimental expression of volume as an extensive quantity. It is named after Emile Amagat. According to Amagat's law of partial volume, the total volume of a