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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.
Such rotations are called isoclinic or equiangular rotations, or Clifford displacements. Beware: not all planes through O are invariant under isoclinic rotations; only planes that are spanned by a half-line and the corresponding displaced half-lines are invariant. [2]
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?"
Gallium(III) sulfate refers to the chemical compound, a salt, with the formula Ga 2 (SO 4) 3, or its hydrates Ga 2 (SO 4) 3 ·xH 2 O. Gallium metal dissolves in sulfuric acid to form solutions containing [Ga(OH 2) 6] 3+ and SO 4 2− ions.
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.
A sulfite sulfate is a chemical compound that contains both sulfite and sulfate anions [SO 3] 2− [SO 4] 2−.These compounds were discovered in the 1980s as calcium and rare earth element salts.
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".