Microsoft Word - WaterChemistry

341 Physical Properties of Iron Oxygen is more soluble in water than nitrogen is; water contains approximately 1 molecule of O 2 ...

342 The unusually high concentration of oxygen gas on Earth is the result of the oxygen cycle. This biogeochemical cycle describ ...

343 Water-soluble silicates in the form of Na 4 SiO 4 , Na 2 SiO 3 , and Na 2 Si 2 O 5 are used as detergents and adhesives. Oxy ...

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345 Phosphorus.................................... Phosphorus is a chemical element with symbol P and atomic number 15. A multiv ...

346 Black phosphorus is obtained by heating white phosphorus under high pressures (about 12,000 standard atmospheres or 1.2 giga ...

347 In this sense, red phosphorus is not an allotrope, but rather an intermediate phase between the white and violet phosphorus, ...

348 personal, clothing, and surface contamination is also required. In addition, due to the high energy of the beta particles, s ...

349 Side products from this production include ferrophosphorus, a crude form of Fe 2 P, resulting from iron impurities in the mi ...

350 Phosphorus (V) Compounds Oxides The most prevalent compounds of phosphorus are derivatives of phosphate (PO 4 3-), a tetrahe ...

351 Sulfides Phosphorus forms a wide range of sulfides, where phosphorus can be P(V), P(III) or other oxidation states. Most fam ...

352 Diphosphine is an analogue of hydrazine. Compounds containing P=P double bonds have also been observed, although they are ra ...

353 Selenium- Inorganic Contaminant 0.05 mg/L MCL Selenium (Se) is an essential element for human nutrition, with the majority o ...

354 EPA has set an enforceable regulation for selenium, called a maximum contaminant level (MCL), at 0.05 mg/L or 50 ppb. MCLs a ...

355 Selenium (Greek σελήνη selene meaning "Moon") was discovered in 1817 by Jöns Jakob Berzelius, who noted the similarity of th ...

356 Isotopes Selenium has six naturally occurring isotopes, five of which are stable:^74 Se,^76 Se,^77 Se, (^78) Se, and (^80) S ...

357 Selenium trioxide may be synthesized by dehydrating selenic acid, H 2 SeO 4 , which is itself produced by the oxidation of s ...

358 Representatives of selenides, diselenides, and selenols include respectively selenomethionine, diphenyldiselenide, and benze ...

359 Selenium occurs naturally in a number of inorganic forms, including selenide-, selenate-, and selenite-containing minerals, ...

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