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Chemical formula Synonyms CAS number; C 9 HF 17 O 2: perfluorononanoic acid: 375-95-1 C 9 H 2 Cl 6 O 3: chlorendic anhydride: 115-27-5 C 9 H 4 Cl 3 NO 2 S: folpet: 133-07-3 C 9 H 4 Cl 8 O: isobenzan: 297-78-9 C 9 H 4 O 5: trimellitic anhydride: 552-30-7 C 9 H 5 BrCrO 3: bromobenzenechromium tricarbonyl: 12082-02-9 C 9 H 5 CrFO 3 ...
A chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus (+) and minus (−) signs.
A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.
Chemical formula. Cl 4 H 8 N 2 Zn: Molar mass: 243.26 g·mol −1 Density: 1.91 g/cm 3: Hazards ... Zinc ammonium chloride is a Class 9 hazardous material ...
14455-29-9 Al 2 Cl 9 K 3: potassium aluminium chloride: 74978-20-4 Al 2 CoO 4: cobalt blue: 1333-88-6 Al 2 F 6: aluminium fluoride: 17949-86-9 Al 2 I 6: aluminium iodide: 18898-35-6 Al 2 MgO 4: magnesium aluminium oxide: 12068-51-8 Al 2 O: dialuminium monoxide: 12004-36-3 Al 2 O 2: dialuminium dioxide: 12252-63-0 Al 2 O 3: aluminium oxide: 1344 ...
The structure of the molecule of urea is O=C(−NH 2) 2.The urea molecule is planar when in a solid crystal because of sp 2 hybridization of the N orbitals. [8] [9] It is non-planar with C 2 symmetry when in the gas phase [10] or in aqueous solution, [9] with C–N–H and H–N–H bond angles that are intermediate between the trigonal planar angle of 120° and the tetrahedral angle of 109.5°.
A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and chemical formulas.The reactant entities are given on the left-hand side and the product entities are on the right-hand side with a plus sign between the entities in both the reactants and the products, and an arrow that points towards the products to show the direction of the reaction. [1]
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 ...
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