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Modern innovations in education
1 The article presents the results of an expert-analytical study of the processes and mechanisms of interaction between subjects of educational activities during the implementation of educational programs in a network form. An analysis of existing domestic and
Properties and characteristics of alkenes
4. Chemical properties of alkenes The energy of a carbon-carbon double bond in ethylene (146 kcal/mol) turns out to be significantly lower than twice the energy of a single C-C bond in ethane (2 88 = 176 kcal/mol). -The C-C bond in ethylene is stronger than the -bond, therefore
Workshop on general chemistry
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Reactivity of benzene homologues
Mrs. Khimiya finally and irrevocably acquired such a compound as benzene only in 1833. Benzene is a compound that has a hot-tempered, one might even say explosive, character. How did they find out? HistoryJohan Glauber at 16
Avogadro mass. Avogadro's law in chemistry. See what "Avogadro's number" is in other dictionaries
According to changes in the definitions of the SI base units, it is exactly equal to N A = 6.022 140 76⋅10 23 mol −1. Sometimes in the literature a distinction is made between Avogadro's constant N A, which has a dimension of mol −1, and the dimensionless Avogadro number A, which is numerically equal to it
Chemical properties Coloring of chromium compounds
Chromium and its compounds are actively used in industrial production, in particular in metallurgy, chemical and refractory industries. Chromium Cr is a chemical element of group VI of the periodic system of Mendeleev, atomic number 24, atomic mass 51.996,
Mixing of gases and vapors having different temperatures
2. Mixing of gases and vapors having different temperatures. This is how atmospheric fogs are formed. Most often, fog appears in clear weather at night, when the Earth's surface, intensively giving off heat, cools down greatly. Warm moist air comes into contact with cool air
Thermodynamic systems and processes
A standard state of matter is a state of matter conditionally chosen as a standard for comparison. The standard state of a pure liquid or solid (crystalline) substance is taken to be its most stable physical state at
Hydroxides classification and chemical properties
Hydroxides are complex substances containing an OH - group, which is linked through an oxygen atom by a single chemical bond with various chemical elements. Like oxides, depending on the nature of the chemical bond E-OH, guide
Genetic features of cytochrome P450
Cytochrome p450 (CYP 450) is the name of a large family of universal enzymes of the human body, responsible for the metabolism of most drugs and other foreign organic compounds (xenobiotics). Metabolism of many classes of drugs
