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  2. Hydrazine - Wikipedia

    en.wikipedia.org/wiki/Hydrazine

    Hydrazine is an inorganic compound with the chemical formula N 2 H 4.It is a simple pnictogen hydride, and is a colourless flammable liquid with an ammonia-like odour.Hydrazine is highly hazardous unless handled in solution as, for example, hydrazine hydrate (N 2 H 4 ·xH 2 O).

  3. Alpha effect - Wikipedia

    en.wikipedia.org/wiki/Alpha_effect

    The representative examples would be high nucleophilicities of hydroperoxide (HO 2 −) and hydrazine (N 2 H 4). [3] The effect is now well established with numerous examples and became an important concept in mechanistic chemistry and biochemistry. [4] However, the origin of the effect is still controversial without a clear winner.

  4. Glossary of chemistry terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_chemistry_terms

    Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...

  5. Hydrazines - Wikipedia

    en.wikipedia.org/wiki/Hydrazines

    Hydrazines (R 2 N−NR 2) are a class of chemical compounds with two nitrogen atoms linked via a covalent bond and which carry from one up to four alkyl or aryl substituents. . Hydrazines can be considered as derivatives of the inorganic hydrazine (H 2 N−NH 2), in which one or more hydrogen atoms have been replaced by hydrocarbon grou

  6. Nickel hydrazine nitrate - Wikipedia

    en.wikipedia.org/wiki/Nickel_hydrazine_nitrate

    Nickel hydrazine nitrate (NHN), (chemical formula: [Ni(N 2 H 4) 3](NO 3) 2 is an energetic material having explosive properties in between that of primary explosive and a secondary explosive. [1] It is a salt of a coordination compound of nickel with a reaction equation of 3N 2 H 4 ·H 2 O + Ni(NO 3 ) 2 →〔Ni(N 2 H 4 ) 3 〕(NO 3 ) 2 + 3H ...

  7. IUPAC nomenclature of chemistry - Wikipedia

    en.wikipedia.org/.../IUPAC_nomenclature_of_chemistry

    IUPAC states that, "As one of its major activities, IUPAC develops Recommendations to establish unambiguous, uniform, and consistent nomenclature and terminology for specific scientific fields, usually presented as: glossaries of terms for specific chemical disciplines; definitions of terms relating to a group of properties; nomenclature of chemical compounds and their classes; terminology ...

  8. Greek letters used in mathematics, science, and engineering

    en.wikipedia.org/wiki/Greek_letters_used_in...

    Archimedes' constant (more commonly just called Pi), the ratio of a circle's circumference to its diameter; the prime-counting function; the state distribution of a Markov chain; in reinforcement learning, a policy function defining how a software agent behaves for each possible state of its environment; a type of covalent bond in chemistry

  9. Monopropellant - Wikipedia

    en.wikipedia.org/wiki/Monopropellant

    The most common use of monopropellants [3] is in low-impulse monopropellant rocket motors, [4] such as reaction control thrusters, the usual propellant being hydrazine [5] [6] which is generally decomposed by exposure to an iridium [7] [8] catalyst bed (the hydrazine is pre-heated to keep the reactant liquid).