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  2. Sulfuric acid - Wikipedia

    en.wikipedia.org/wiki/Sulfuric_acid

    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".

  3. Sulfur - Wikipedia

    en.wikipedia.org/wiki/Sulfur

    This is an accepted version of this page This is the latest accepted revision, reviewed on 6 January 2025. This article is about the chemical element. For other uses, see Sulfur (disambiguation). Chemical element with atomic number 16 (S) Sulfur, 16 S Sulfur Alternative name Sulphur (British spelling) Allotropes see Allotropes of sulfur Appearance Lemon yellow sintered microcrystals Standard ...

  4. Piranha solution - Wikipedia

    en.wikipedia.org/wiki/Piranha_solution

    Molecular models of the different molecules active in Piranha solution: peroxysulfuric acid (H 2 SO 5) and hydrogen peroxide (H 2 O 2). Piranha solution, also known as piranha etch, is a mixture of sulfuric acid (H 2 SO 4) and hydrogen peroxide (H 2 O 2).

  5. Tin(IV) oxide - Wikipedia

    en.wikipedia.org/wiki/Tin(IV)_oxide

    Tin(IV) oxide, also known as stannic oxide, is the inorganic compound with the formula SnO 2.The mineral form of SnO 2 is called cassiterite, and this is the main ore of tin. [9]

  6. Acid dissociation constant - Wikipedia

    en.wikipedia.org/wiki/Acid_dissociation_constant

    Another example occurs in chemical oceanography: [84] in order to quantify the solubility of iron(III) in seawater at various salinities, the pK a values for the formation of the iron(III) hydrolysis products Fe(OH) 2+, Fe(OH) + 2 and Fe(OH) 3 were determined, along with the solubility product of iron hydroxide. [85]

  7. Sodium sulfate - Wikipedia

    en.wikipedia.org/wiki/Sodium_sulfate

    Sodium sulfate (also known as sodium sulphate or sulfate of soda) is the inorganic compound with formula Na 2 SO 4 as well as several related hydrates.All forms are white solids that are highly soluble in water.

  8. Las madres del Estado Islámico - The Huffington Post

    highline.huffingtonpost.com/articles/es/mothers...

    En Calgary, Canadá, entre los entrenamientos de fútbol, las horas de trabajo en contabilidad y los ratos de lo que surja con los vecinos, Christianne Boudreau solía usar cada minuto libre que tenía para ver vídeos del Estado Islámico, con la nariz pegada a la pantalla del ordenador.

  9. Disulfuric acid - Wikipedia

    en.wikipedia.org/wiki/Disulfuric_acid

    Disulfuric acid (alternative spelling disulphuric acid) or pyrosulfuric acid (alternative spelling pyrosulphuric acid), also named oleum, is a sulfur oxoacid. [3] It is a major constituent of fuming sulfuric acid, oleum, and this is how most chemists encounter it.