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Cryptids are animals that cryptozoologists believe may exist somewhere in the wild, but whose present existence is disputed or unsubstantiated by science.Cryptozoology is a pseudoscience, which primarily looks at anecdotal stories, and other claims rejected by the scientific community.
A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z). [ 1 ] The definitive visualisation of all 118 elements is the periodic table of the elements , whose history along the principles of the periodic law was one of the founding ...
This lists the character tables for the more common molecular point groups used in the study of molecular symmetry.These tables are based on the group-theoretical treatment of the symmetry operations present in common molecules, and are useful in molecular spectroscopy and quantum chemistry.
A large Mothman sculpture stands along Main Street Tuesday, Dec. 11, 2007 in Point Pleasant, W.Va. More than 40 years after the first reported sighting of the mysterious creature later dubbed ...
The term cryptid is used by proponents of cryptozoology, a pseudoscience, to refer to beings that cryptozoologists believe may in fact exist but have not yet been discovered. This category is for notable examples of entities that cryptozoologists have considered to be cryptids
where P is the pressure, V is the volume, N is the number of gas molecules, k B is the Boltzmann constant (1.381×10 −23 J·K −1 in SI units) and T is the absolute temperature. These equations are exact only for an ideal gas, which neglects various intermolecular effects (see real gas). However, the ideal gas law is a good approximation for ...
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.
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 ...