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SO4 is an acronym for remembering the function of the fourth cranial nerve, the trochlear nerve, which control the superior oblique muscle of the eye. SO(4), the group of rotations in 4-dimensional Euclidean space
The hydrogensulfate ion (HSO − 4), also called the bisulfate ion, is the conjugate base of sulfuric acid (H 2 SO 4). [ 59 ] [ b ] Sulfuric acid is classified as a strong acid; in aqueous solutions it ionizes completely to form hydronium ( H 3 O + ) and hydrogensulfate ( HSO − 4 ) ions.
The western desert of Egypt was a major source of alum substitutes in antiquity. These evaporites were mainly FeAl 2 (SO 4) 4 ·22 H 2 O, MgAl 2 (SO 4) 4 ·22 H 2 O, NaAl(SO 4) 2 ·6 H
Although nearly 100% sulfuric acid solutions can be made, the subsequent loss of SO 3 at the boiling point brings the concentration to 98.3% acid. The 98.3% grade, which is more stable in storage, is the usual form of what is described as "concentrated sulfuric acid".
Upside-down marks, simple in the era of hand typesetting, were originally recommended by the Real Academia Española (Royal Spanish Academy), in the second edition of the Ortografía de la lengua castellana (Orthography of the Castilian language) in 1754 [3] recommending it as the symbol indicating the beginning of a question in written Spanish—e.g. "¿Cuántos años tienes?"
The borosulfates are heteropoly anion compounds which have sulfate groups attached to boron atoms. Other possible terms are sulfatoborates or boron-sulfur oxides. The ratio of sulfate to borate reflects the degree of condensation.
Jarosite is a basic hydrous sulfate of potassium and ferric iron (Fe-III) with a chemical formula of KFe 3 (SO 4) 2 (OH) 6.This sulfate mineral is formed in ore deposits by the oxidation of iron sulfides.
Vanadium(III) sulfate is the inorganic compound with the formula V 2 (SO 4) 3.It is a pale yellow solid that is stable to air, in contrast to most vanadium(III) compounds. It slowly dissolves in water to give the green aquo complex [V(H 2 O) 6] 3+.