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Jan 06, 2018Phosphate is a chemical found in the body. It contains a mineral called phosphorus that occurs naturally in many foods. Phosphorus supports bones and
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Aug 11, 2021Phosphorus cycle is unique and different from the nitrogen cycle because phosphorus does not exist in a gaseous form. This document provides basic information on the various forms of phosphorus present in the soil and the processes that affect phosphorus availability for
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Nov 14, 2019White Phosphorus. The white phosphorus allotrope is the most reactive, least stable, and most toxic of the three. It consists of four phosphorus molecules that chemically bond to form a
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Mar 26, 2019Phosphorus noun. A poisonous nonmetallic element of the nitrogen group, obtained as a white, or yellowish, translucent waxy substance, having a characteristic disagreeable smell; this waxy allotropic form is also called yellow phosphorus, to distinguish it from another allotropic form, red phosphorus.
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Mechanism: The water that is involved is actually moisture that is accounting for the hydrolysis of phosphorus.The reactions can be dissected into three semi-reactions: $ce{3P + 3H2O - 3OPH + 3H}$ $ce{P +3H - PH3}$ $ce{30PH + 3H2O - 3H3PO2}$ The phosphine so obtained usually inflames spontaneously on coming into contact with the air; each bubble as it escapes forms a vortex ring of
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Apr 02, 2020Under phosphorus (P) deficiency, Lupinus albus (white lupin) releases large amounts of organic acid anions from specialized root structures, so-called cluster or proteoid roots, to mobilize and acquire sparingly soluble phosphates from a restricted soil volume. The molecular mechanisms underlying this release and its regulation are, however, poorly understood.
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49 161 40; Phosphorus, white or yellow, dry Find more information on this substance at: PubChem, PubMed PDF documents can be viewed with the free Adobe Reader
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Phosphate binders are used to decrease the absorption of phosphate from food in the digestive tract. They are used when there is an abnormally high blood phosphate level (hyperphosphatemia) which can be caused by impaired renal phosphate excretion or increased extracellular fluid phosphate loads.Phosphate binders react with phosphate to form an insoluble compound, making it unable to be
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Phosphorus pentoxide is a potent dehydrating agent as indicated by the exothermic nature of its hydrolysis: However, its utility for drying is limited somewhat by its tendency to form a protective viscous coating that inhibits further dehydration by unspent material. A granular form of P
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49 161 40; Phosphorus, white or yellow, dry Find more information on this substance at: PubChem, PubMed PDF documents can be viewed with the free Adobe Reader
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The reference standard state of white phosphorus is taken despite the fact that this form not being the most stable allotrope but simply the most reproducible form of phosphorus. A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion. B.
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Phosphorus pentoxide is a potent dehydrating agent as indicated by the exothermic nature of its hydrolysis: However, its utility for drying is limited somewhat by its tendency to form a protective viscous coating that inhibits further dehydration by unspent material. A granular form of P
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Jul 05, 2009White phosphorus is also infamous for its propensity to burst into flame. For this reason it is often used in military campaigns to create smokescreens to
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Nov 21, 2020Phosphorus is a chemical element with atomic number 15 which means there are 15 protons and 15 electrons in the atomic structure. The chemical symbol for Phosphorus is P . As an element, phosphorus exists in two major forms—white phosphorus and red phosphorus—but because it is highly reactive, phosphorus is never found as a free element on
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Phosphorus comes from the Greek word phosphorous, which means bringer of light. In drug or supplement form, it's called phosphate. It plays an important role in keeping you healthy, so it's
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White phosphorus (P4) is a highly reactive form of elemental phosphorus that reacts with oxygen to form a variety of molecular compounds, including diphosphorus pentoxide. Calculate the oxidation number for P on the left side of the reaction. Calculate the
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Scarlet Phosphorus, sometimes called Schenck's phosphorus, can be prepared by boiling a 10 per cent, solution of phosphorus in phosphorus tribromide. It appears to be an intermediate form between the white and the red.
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Phosphorus is a nonmetal. As a gas it is colorless, but as a solid it can be a silvery white or a red depending on the how is bonded with itself. It is a vital part of living thing, like in human nervous tissue. It burns when exsposed to air. Phosphorus exists in at least 3 allotropic forms.
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Red phosphorus is also used in fireworks, and other explosives. Black phosphorus consists of hexagonal sheets of phosphorus atoms (similar in structure to graphite), and is the least reactive form. It has little commercial value, but can be converted to white phosphorus by heating it under pressure.
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Two crystalline forms of white phosphorus are known. Both forms contain P 4 molecules, but the molecules are packed together in different ways. The α form is always obtained when the liquid freezes. However, below -76.9C, the α form spontaneously converts to the β form: P 4 (s, α) → P 4 (s, β) b. Predict which form of phosphorus has
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Oct 06, 2012Phosphorus is a solid. There are various forms, allotropes of phosphorus:-White phosphorus consisting of P4 molecules - most familiar form; Red phosphorus with chain structure
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It ignites in air at temperatures above 100C; in the presence of a small amount of diphosphine vapor, it ignites spontaneously to form a white smoke—phosphorus pentoxide. Mixtures of PH 3 and oxygen are explosive (the reaction proceeding by a chain mechanism).
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Phosphorus; Phosphorus has the atomic number 15, and is a non-metal that belongs to the nitrogen group. It is present in inorganic phosphate rocks and is a mineral. There are two forms of phosphorus, white and red, and the chemical glows when it is exposed to oxygen. This occurs when the white form is exposed, but not the red form.
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The White Phosphor tube uses a P-45 phosphor screen, which yields an alternate coloration closer to black and white imagery. This change in color has been reported to enhance overall object recognition while providing contrast sensitivity equivalent to green phosphor.
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Red: burning yields toxic oxides of phosphorus. White/Yellow: toxic gases and vapors such as phosphoric acid fumes are released. (EPA, 1998) Health Hazard. It is classified as super toxic. The probable lethal dose is less than 5 mg/kg (a taste or less than 7 drops) for 70 kg (150 lb.) person. Poisonous if swallowed or if fumes are inhaled.
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Why does Nitrogen form N₂ (and not N₄) while but Phosphorus forms P₄ (and not P₂)? Ask Question Asked 6 years, 10 months ago. Active 3 years ago. Viewed 35k times 17 3 $begingroup$ $ce{N2}$ is a gas $ce{P4}$ is a solid $ce{N}$ and $ce{P}$ are in the same group in the periodic table
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Phosphorus exists in four or more allotropic forms: white (or yellow), red, and black (or violet). Ordinary phosphorus is a waxy white solid; when pure it is colorless and transparent. White phosphorus has two modifications: alpha and beta with a transition temperature at -3.8 o C. It is insoluble in water, but soluble in carbon disulfide.
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For oral dosage form (solution): To replace phosphorus lost by the body or to make the urine more acid or to prevent the formation of kidney stones in the urinary tract: Adults and teenagers—The equivalent of 228 milligrams (mg) of phosphorus (2 tablets) dissolved in six to eight ounces of water four times a day, with meals and at bedtime.
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Phosphorus pentoxide is a potent dehydrating agent as indicated by the exothermic nature of its hydrolysis: However, its utility for drying is limited somewhat by its tendency to form a protective viscous coating that inhibits further dehydration by unspent material. A granular form of P
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Phosphorus exists in four or more allotropic forms: white (or yellow), red, and black (or violet). Ordinary phosphorus is a waxy white solid; when pure it is colorless and transparent. White phosphorus has two modifications: alpha and beta with a transition temperature at -3.8 o C. It is insoluble in water, but soluble in carbon disulfide.
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