Nitrogen is produced commercially almost exclusively from air, most commonly by the fractionaldistillation of liquid air. In this process, air is first cooled to a temperature below that of the boiling points of its major components, a temperature somewhat less than - 328°F (-200°C). The liquid air is then allowed to warm up, allowing the lower-boiling-point nitrogen to evaporate from the mixture first. Nitrogen gas escaping from the liquid air is then captured, cooled, and then liquefied once more.
This process produces a high-quality product that generally contains less than 20 parts per million of oxygen. Both an "oxygen-free" form of nitrogen (containing less than two parts per million of oxygen) and an "ultra-pure" nitrogen (containing less than 10 parts per million of argon) are also available commercially.
A number of methods are available for preparing nitrogen from its compounds in the laboratory on a small scale. For example, a hot aqueous solution of ammonium nitrite decomposes spontaneously to give elemental nitrogen and water. The heating of barium or sodium azide (NaN3 or Ba[N3]2) also yields free nitrogen. In another approach, passing ammonia gas over a hot metallic oxide will result in the formation of free nitrogen, the free metal, and water. Yet another route is the reaction between ammonia and bromine, resulting in the formation of nitrogen and ammonium bromide.
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All noble gases occur as elemental gases in the nature.
Nitrogen is obtained by the plants in the mineral form.
Nitrogen (N) is a chemical element, not a solution; nitrogen can be obtained as a very pure gas.
Elemental Nitrogen may be conveniently obtained by cryogenic distillation from the atmosphere. The liquid form is widely used as a low temperature coolant. It is an important part of our diet, and is found in proteins. Nitrates are very useful chemicals, and until recently, were obtained from immense deposits of seabird droppings, sometimes called guano.
Proteins are organic compounds, mostly composed of hydrogen, oxygen, nitrogen and carbon with some trace elements. The first three are obtained from water and the air, while the nitrogen and trace elements are acquired primarily via the roots from minerals (or fertilizer) in the soil.
I believe you determine Organic Nitrogen by subtracting Ammonia Nitrogen from Total Kjeldahl Nitrogen.
Nitrogen is obtained by the plants in the mineral form.
== == Nitrogen is found in all living systems as part of the makeup of biological compounds. Nitrogen is obtained from the atmosphere by passing air over heated copper or iron. The oxygen is removed from the air, leaving nitrogen mixed with inert gases. Pure nitrogen is obtained by fractional distillation of liquid air; because liquid nitrogen has a lower boiling point than liquid oxygen, the nitrogen distills off first and can be collected.
Liquid Air
Nitrogen can be obtained as a solid at very low temperature, under -210 0C.
Nitrogen
Nitrogen can be obtained as a solid at very low temperature, under -210 0C. At room temperature nitrogen is a gas.
.They get it from eating plants.
Nitrogen (N) is a chemical element, not a solution; nitrogen can be obtained as a very pure gas.
After this reaction ammonia (NH3) is obtained.
The anagram is nitrogen, a gaseous element.
Most of the gases in air, Nitrogen, Oxygen, Argon and others are obtained by fractional distillation of liquid air.
A mixture is obtained; 80 % N and 20 % O is air.