Molar weight of nitrogen

As we described in Section 4. The number of things in a mole is large, very large 6.

Nitrogen is a chemical element ; it has symbol N and atomic number 7. Nitrogen is a nonmetal and the lightest member of group 15 of the periodic table , often called the pnictogens. It is a common element in the universe , estimated at seventh in total abundance in the Milky Way and the Solar System. At standard temperature and pressure , two atoms of the element bond to form N 2 , a colorless and odorless diatomic gas. Because of the volatility of nitrogen compounds, nitrogen is relatively rare in the solid parts of the Earth. It was first discovered and isolated by Scottish physician Daniel Rutherford in and independently by Carl Wilhelm Scheele and Henry Cavendish at about the same time.

Molar weight of nitrogen

The molecular weight of a substance, also called the molar mass , M, is the mass of 1 mole of that substance, given in M gram. Molecular weight is represented by the same number in all unit systems regardless of the system used. For this reason, in many cases the unit for the molecular weight is not mentioned; however, one must realize that it is not a dimensionless parameter. The molecular weight of a pure compound is determined from its chemical formula and the atomic weights of its elements. Example: The molecular weight of ethanol C 2 H 5 OH To calculate the molecular weight of ethanol, the molecular weight of each atom in the molecule is summed:. See also Physical data for hydrocarbons , Physical data for alcohols and carboxylic acids , Physical data for organic nitrogen compounds and Physical data for organic sulfur compounds. Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with older versions of the amazing SketchUp Make and the newer "up to date" SketchUp Pro. Translate this page to Your Own Language. If you want to promote your products or services in the Engineering ToolBox - please use Google Adwords. Temperature o C K o F. Length m km in ft yards miles naut miles.

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Molar weight of nitrogen

Allotropes Some elements exist in several different structural forms, called allotropes. Each allotrope has different physical properties. For more information on the Visual Elements image see the Uses and properties section below.

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Molecular weight is represented by the same number in all unit systems regardless of the system used. Nitrogen does not share the proclivity of carbon for catenation. Nitrogen trifluoride NF 3 , first prepared in is a colourless and odourless gas that is thermodynamically stable, and most readily produced by the electrolysis of molten ammonium fluoride dissolved in anhydrous hydrogen fluoride. There are some parallels between the chemistry of ammonia NH 3 and water H 2 O. Synthetically produced ammonia and nitrates are key industrial fertilisers , and fertiliser nitrates are key pollutants in the eutrophication of water systems. Tools Tools. Angewandte Chemie International Edition. Furthermore, nitrous oxide, which is produced during denitrification, attacks the atmospheric ozone layer. Nitrogen triiodide NI 3 is still more unstable and was only prepared in Despite this, it is not very abundant in Earth's crust, making up somewhere around 19 parts per million of this, on par with niobium , gallium , and lithium. Blue dinitrogen trioxide N 2 O 3 is only available as a solid because it rapidly dissociates above its melting point to give nitric oxide, nitrogen dioxide NO 2 , and dinitrogen tetroxide N 2 O 4. Nordic Council of Ministers.

In chemistry, the formula weight is a quantity computed by multiplying the atomic weight in atomic mass units of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all of these products together. If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight.

Some nitrogen fixation is done by lightning strikes producing the nitrogen oxides, but most is done by diazotrophic bacteria through enzymes known as nitrogenases although today industrial nitrogen fixation to ammonia is also significant. Dinitrogen tetroxide is very useful for the preparation of anhydrous metal nitrates and nitrato complexes, and it became the storable oxidiser of choice for many rockets in both the United States and USSR by the late s. Archived from the original on October 15, Critical Reviews in Environmental Science and Technology. Edinburgh, Scotland: William Creech, , pp. Nitrogen fixation by industrial processes like the Frank—Caro process — and Haber—Bosch process — eased this shortage of nitrogen compounds, to the extent that half of global food production now relies on synthetic nitrogen fertilisers. Temperature o C K o F. As a cryogenic liquid, liquid nitrogen can be dangerous by causing cold burns on contact, although the Leidenfrost effect provides protection for very short exposure about one second. Nitric acid HNO 3 is by far the most important and the most stable of the nitrogen oxoacids. Periodic table. Nitrogen forms an extensive series of nitrides with carbon, including those with chain-, graphitic- , and fullerenic -like structures. Nitrogen must first be processed, or " fixed ", into a plant-usable form, usually ammonia. Length m km in ft yards miles naut miles.