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  Encyclopedia of Keywords > Nature > Matter > Atoms > Nitrogen > Inert   Michael Charnine

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  1. Chemically inert, the element has nine isotopes and is abundant in many nuclear processes.

Inert Pair Effect

  1. In physics and chemistry, the inert pair effect occurs when electrons are pulled closer to the nucleus, making them stabler and more difficult to ionise.
  2. The inert pair effect is apparent when observing the trend in favoured oxidation states down groups III to VI of the periodic table.

Nitrogen Narcosis

  1. Nitrogen Nitrogen (N 2) is an inert gas that causes nitrogen narcosis in the diver, so its use is limited to shallower dives.
  2. Helium -this is an inert gas present in air in very small quantity (0.0005%) and is used to prevent nitrogen narcosis.
  3. This offsets the physiological limits imposed from inert gas uptake under pressure, such as decompression obligations and nitrogen narcosis.


  1. Narcosis is not unique to nitrogen; however, it can occur with many of the so-called “noble” or inert gases, with the exception of helium.

Relatively Inert

  1. Tungsten is relatively inert, but compounds (in which it has various valence s) are known. (Web site)
  2. While still relatively inert, the bicyclo[2.2.2]octane compound is roughly a million times more reactive than its bicyclo[2.2.1]heptane analog, shown above. (Web site)

Inert Solvents

  1. By using inert solvents such as hexane, benzene and methylene chloride, these competing solvent additions are avoided. (Web site)
  2. Dilute solutions of isocyanic acid are stable in inert solvents, e.g. (Web site)

Inert Material

  1. The canals are finally filled or sealed with an inert material called gutta-percha.
  2. Once each canal is prepared, it is filled with an inert material called gutta percha.
  3. Process of removing pulp of a tooth and filling it with an inert material.


  1. The absorption of nitrogen and the rate of blood supply then determine the amount of partial pressure of inert gas the compartment can tolerate. (Web site)
  2. Below this partial pressure of oxygen and one or more inert gases.
  3. Workman's M-values are based on the partial pressure of the inert gas in question, not on the total pressure of the breathing gas.


  1. Also, as desired for temperature control of the system, any gas inert to the catalyst composition and reactants can also be present in the gas stream. (Web site)


  1. They are all relatively inert, corrosion -resistant metals which have been used for minting coins, hence their name. (Web site)


  1. June Russell's Health Facts: The Placebo Effect "Placebos are not always inert; they can have actual ingredients. (Web site)
  2. Placebos exert an " expectancy " effect whereby an inert substance which is believed to be a drug has effects similar to the actual drug. (Web site)


  1. A placebo is a medication or treatment believed by the administrator of the treatment to be inert or innocuous.
  2. A placebo is any medical treatment that is inert, such as a sugar pill.
  3. Group B received a placebo (an inert sugar pill).


  1. If using trimethylsulphonium chloride, the liberated chlorine can be removed using a sodium hydroxide scrubber, suitably with an inert gas flow. (Web site)


  1. C. for about 1 to 24 hours in an inert solvent, such as ethanol, ethyl acetate and the like. (Web site)
  2. Effects of ethanol and amphetamine on inert gas narcosis in humans. (Web site)
  3. An especially suitable inert solvent is, for example, toluene and, in the solvolysis of esterified carboxy groups, also ethanol. (Web site)


  1. A suitable inert solvent is, for example, an alcohol, for example methanol or ethanol, or an ether, for example tetrahydrofuran or t-butyl methyl ether. (Web site)
  2. When syngas is reacted to produce ammonia or methanol, inert gases have to be purged from the synthesis loop.


  1. Sulfur hexafluoride is an extremely inert and nontoxic gas, very useful as an insulator in high-voltage electrical equipment.

Combustion Chamber

  1. Also, because it is more dense than the other inert substance in the combustion chamber, nitrogen, it has a higher specific heat and more heat capacitance.
  2. This exhaust gas is inert in the combustion chamber. (Web site)


  1. However niobium metal, without compounds, is physiologically inert (and thus hypoallergenic) and harmless.
  2. In respects other than inhalation, pure silicon dioxide is inert and harmless.
  3. Barium by itself is an inert substance and completely harmless.


  1. When breathing Heliox, the diver's body still takes on the inert gas (gas loading) into his or her blood, but this time it's helium. (Web site)

Organic Compounds

  1. Both the active and inert ingredients in pesticides can be organic compounds; therefore, both could add to the levels of airborne organics inside homes. (Web site)


  1. Neon has a full shell of eight electrons in the outside shell, the L shell, meaning the neon is an inert element, the end of the period. (Web site)
  2. The inert gases or noble gases all have a complete outside shell of electrons. (Web site)
  3. The first Bohr orbit is filled when it has two electrons, and this explains why helium is inert.

Chemical Reactions

  1. The accompanying CD-ROMs cover silicate mineral structures, the inert pair effect and a database of chemical reactions of the p Block elements. (Web site)


  1. Venous Gas Emboli - Inert gas bubbles in venous blood (which return to the heart and lungs).
  2. To achieve an exact simulation, a reduced emission of inert gases by means of microbubbles in the lungs have to be taken into consideration. (Web site)


  1. Breathing loop shall be flushed with fresh oxygen prior to ascending to avoid hypoxia due to inert gas in the loop.
  2. Similarly, progressive increases in oxygen partial pressures aid washout of all inert gases, while also addressing concerns of hypoxia.


  1. Gas chromatography (GC) is a method used to identify what a compound is and how far each part of it moves through an inert gas, or noble gas. (Web site)
  2. Alternatively, the substituted or unsubstituted benzoic acid compound may be dissolved in an inert solvent such as water or a liquid carboxylic acid. (Web site)
  3. Standard Protection Procedure The compound is dissolved in dry MeOH and thionyl chloride (2 eq) is added drop wise at 0° under an inert atmosphere.


  1. The polymerization is preferably carried out in the absence of oxygen, in particular in an inert gas atmosphere, e.g. (Web site)
  2. The inert nature of the ethers relative to the alcohols is undoubtedly due to the absence of the reactive O–H bond. (Web site)
  3. The process is preferably performed in the absence of the inert liquid. (Web site)


  1. The reaction can also be done in the presence of inert gases which are stable under the reaction conditions such as nitrogen and argon. (Web site)
  2. FIG. 2 is a graphical representation of a sorption isotherm of a coal sample in the presence of an inert gas. (Web site)
  3. Crop purity: Crop purity refers to the presence of contaminants including weed seed, other crop seed, and inert matter.


  1. When the diver reaches the surface the tissues are still partly saturated with the breathed inert gases. (Web site)


  1. A solution of n-BuLi in THF is added to a solution of diisopropyl amine in the same solvent under an inert atmosphere at -78 o C. (Web site)
  2. Similarly, nitrogen is an inert gas normally stored throughout the human body, such as tissues and fluids, in physical solution. (Web site)
  3. While our bodies burn oxygen, as an inert gas the nitrogen stays in solution in our bodies until the pressure is relieved, which occurs as a diver surfaces.


  1. We here report that the mutant protein DnaA R334A is inert to hydrolysis of bound ATP, although its affinities for ATP and ADP remain unaffected.
  2. The hydrolysis in Step A4 may be carried out by reacting the compound of formula (VI) with a base in an inert solvent. (Web site)


  1. Removal The ester is dissolved in phenol and TFA (1-2 eq) is added under an inert atmosphere at 45°.


  1. Neon Neon (Ne) is an inert gas sometimes used in deep commercial diving but is very expensive.


  1. These different gas mixtures may be used to extend bottom time, reduce inert gas narcotic effects, and reduce decompression times. (Web site)


  1. Alternatively, a chemically inert reaction mass can be heated using a high-energy power source via a heat exchanger, and then no combustion chamber is used. (Web site)


  1. The above reactions can be carried out in the presence or absence of solvents or diluents which are inert to the reactants. (Web site)
  2. In certain embodiments it is preferable to perform the reactions under an inert atmosphere of a gas such as nitrogen or argon. (Web site)
  3. Preferably, the reactions are carried out under inert nitrogen atmosphere and anhydrous reactors and solvents. (Web site)


  1. For divers, the window is an important factor in staging because it impacts both inert and metabolic gas uptake and elimination.
  2. Increased pressures help to constrict bubbles, while breathing pure oxygen maximizes inert gas washout (elimination).

Decompression Sickness

  1. The concentration of inert gases, such as nitrogen and helium, are planned and checked to avoid nitrogen narcosis and decompression sickness. (Web site)
  2. A huge number of factors affect inert gas absorption, elimination and our susceptibility to decompression sickness.
  3. Decompression sickness [DCS] due to the evolution of inert gas bubbles, in vivo. (Web site)


  1. Inversely, inert gases must be exhausted from the system during ascent to prevent the over-expansion of the counter lung.


  1. The DHTO, which is normally insoluble in the inert organic reaction vehicle employed, may be suspended in the vehicle. (Web site)


  1. In other reactions, which typically involve the breaking of the carbon-oxygen bond, ethers are relatively inert. (Web site)
  2. Suitable solvents are inert organic solvents, preferably aproticapolar or aprotic polar solvents such as ethers (e.g. (Web site)
  3. Suitable solvents for the reaction include inert solvents such as ethers (e.g. (Web site)


  1. The noble gases, also known as rare or inert gases, form Group 18 of the Periodic Table, embedded between the alkali metals and the halogens. (Web site)
  2. It is the least reactive member of group 18 (the noble gases) of the periodic table and therefore virtually inert.
  3. It is essentially inert and occupies the last place in the zero group of gases in the Periodic Table.


  1. In a typical preparation, benzene compounds represented by formula I and catalyst are placed in the reactor under inert atmosphere. (Web site)
  2. The preferred solid refractory oxides are those commonly referred to as inert and which have heretofore been proposed for use as catalyst supports. (Web site)
  3. The catalyst is contacted with the reducing gas, which may be mixed with an inert carrier gas, such as nitrogen at an initial starting temperature. (Web site)


  1. Saturated ketones are generally inert to oxidation conditions that convert aldehydes to carboxylic acids.
  2. Chemically, ethers are inert except for the oxidation reaction.
  3. Inert gas - A gas that will not support most chemical reactions, particularly oxidation.

Room Temperature

  1. If X is alkoxy, the reaction is preferably begun under an inert atmosphere at room temperature, which may be maintained for the duration of the reaction. (Web site)
  2. Removal The ester is dissolved in DCM and magnesium bromide etherate (excess) is added at room temperature under an inert atmosphere.
  3. Argon is inert under most conditions and forms no confirmed stable compounds at room temperature. (Web site)


  1. Benzene, acetone and other compounds which do not oxidize or oxidize only weakly under the conditions described above may be used as inert solvents. (Web site)


  1. The other chamber contains an inert gas under pressure (typically nitrogen) that provides the compressive force on the hydraulic fluid.
  2. During the process, inert gases can also be fed to the chamber in conjunction with the precursor fluid. (Web site)


  1. However, it is more preferred to conduct drying in an inert gas atmosphere or in vacuum from the standpoint of preventing the iron sulfide from oxidizing. (Web site)
  2. DO NOT store potassium, rubidium or cesium for longer than a year unless stored in an inert (argon) atmosphere or in a vacuum.
  3. The vaccine is packaged in freeze-dried form with inert gas in place of vacuum. (Web site)


  1. Nature > Matter > Atoms > Nitrogen
  2. Solvent
  3. Physics > Thermodynamics > Gases > Helium
  4. Nature > Matter > Atoms > Oxygen
  5. Encyclopedia of Keywords > Places > Earth > Atmosphere

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  Originally created: July 31, 2008.
  Links checked: June 26, 2013.
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