You can consider all pyros entirely obsolete and replaced by di- (disulphuric acid, disulphate, diphosphate, etc.). Personally, I have never encountered pyro-anything outside biochemical lectures (and my school’s biology classes) when connected to phosphate. Meta ( met Spanish meta) n (Placename) a river in Colombia, rising in the Andes and flowing northeast and east, forming part of the border between Colombia and Venezuela, to join the Orinoco River. According to a quick search across Wikipedia, pyro is only applicable to phosphate and sulphate and their respective acids meaning the dehydrated dimer. Scaler, originalnumberofclusters, or familyminsamplespercentage. Here the metadata would be which is outside the recordpath i.e. Likewise, pyruvic acid was originally prepared by heating of tartaric acid. This parameter helps to add metadata with each record into the resulting table. A few decades later, researchers realised that the ‘pyro’-phosphate was, in fact, a diphosphate. Hence, pyrophosphates were initially prepared by heating hydrogen phosphates to red glow. Pyro, meaning fire in Greek, is a prefix for something that has to do with being burnt in some way. Para is not used in inorganic chemistry to the best of my knowledge. $\ce$.) The logic is that the ‘true’ hydrate needs to be hydrated, to afterwards give the meta-hydrate. Meta Keywords It specifies the different meta keywords and it should be represented either by lowercase or uppercase. The prefix “pyro-” was used to designate an acid that is formally formed by removing one molecule of water from two molecules of an ortho-acid. The prefixes “ortho-” and “meta-” were used to distinguish acids differing in the formal content of water. Sometimes called prefix multipliers, these prefixes are also used in electronics and physics. (The prefix “per-” is not be confused with the prefix “peroxo-”.) Kilo, mega, giga, tera, peta, exa, zetta and all that: Kilo, mega, giga, tera, peta, exa, zetta are among the list of prefixes used to denote the quantity of something, such as a byte or bit in computing and telecommunications. The prefix “hypo-” was used to denote a lower oxidation state, and the prefix “per-” was used to designate a higher oxidation state. In the older literature, the prefixes “hypo-”, “per-”, “ortho-”, “meta-”, and “pyro-” were used in some cases for the distinction between different acids with the same characteristic element.
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