- law of constant heat summation
- • 1) закон постоянства сумм тепла; 2) закон Гесса• закон Гесса• закон постоянства сумм тепла
English-Russian dictionary of chemistre. 2014.
English-Russian dictionary of chemistre. 2014.
Hess's law — is a law of physical chemistry named for Germain Hess s expansion of the Hess Cycle and used to predict the enthalpy change and conservation of energy (denoted as state function ΔH) regardless of the path through which it is to be… … Wikipedia
Summation of Grandi's series — General considerationstability and linearityThe formal manipulations that lead to 1 − 1 + 1 − 1 + · · · being assigned a value of 1⁄2 include: *Adding or subtracting two series term by term, *Multiplying through by a scalar term by term, *… … Wikipedia
reaction, heat of — Amount of heat that must be added or removed during a chemical reaction to keep all substances involved at the same temperature. If it is positive (heat must be added), the reaction is endothermic; if it is negative (heat is given off), the… … Universalium
Planck's law — For a general introduction, see black body. In physics, Planck s law describes the spectral radiance of electromagnetic radiation at all wavelengths from a black body at temperature T. As a function of frequency u, Planck s law is written as:… … Wikipedia
Hess , Germain Henri — (1802–1850) Swiss–Russian chemist Hess, who was born at Geneva in Switzerland, was taken to Russia as a child by his parents. He studied medicine at the University of Dorpat (1822–25) and started his career by practicing medicine in Irkutsk. In… … Scientists
Hess, Germain Henri — ▪ Russian chemist born Aug. 7, 1802, Geneva, Switz. died Nov. 30, 1850, St. Petersburg, Russia chemist whose studies of heat in chemical reactions formed the foundation of thermochemistry. After practicing medicine for several years… … Universalium
Germain Henri Hess — Infobox Scientist name = PAGENAME box width = image width =150px caption = PAGENAME birth date = August 7, 1802 birth place = Geneva, Switzerland death date = November 30, 1850 death place = St. Petersburg residence = citizenship = nationality =… … Wikipedia
Entropy — This article is about entropy in thermodynamics. For entropy in information theory, see Entropy (information theory). For a comparison of entropy in information theory with entropy in thermodynamics, see Entropy in thermodynamics and information… … Wikipedia
analysis — /euh nal euh sis/, n., pl. analyses / seez /. 1. the separating of any material or abstract entity into its constituent elements (opposed to synthesis). 2. this process as a method of studying the nature of something or of determining its… … Universalium
literature — /lit euhr euh cheuhr, choor , li treuh /, n. 1. writings in which expression and form, in connection with ideas of permanent and universal interest, are characteristic or essential features, as poetry, novels, history, biography, and essays. 2.… … Universalium
biblical literature — Introduction four bodies of written works: the Old Testament writings according to the Hebrew canon; intertestamental works, including the Old Testament Apocrypha; the New Testament writings; and the New Testament Apocrypha. The Old… … Universalium