2nd November 2019

windows2universe

16

Where is the Earth's nitrogen stored?

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Nitrogen moves slowly through the cycle and is stored in reservoirs such as the atmosphere, living organisms, soils, and oceans along its way. Most of the nitrogen on Earth is in the atmosphere. Approximately 80% of the molecules in Earth's atmosphere are made of two nitrogen atoms bonded together (N₂).

In this regard, where nitrogen is found?

It is the fifth most abundant element in the universe and makes up about 78% of the earth's atmosphere, which contains an estimated 4,000 trillion tons of the gas. Nitrogen is obtained from liquefied air through a process known as fractional distillation.

Where does nitrogen naturally occur?

Nitrogen is a naturally occurring element that is essential for growth and reproduction in both plants and animals. It is found in amino acids that make up proteins, in nucleic acids, that comprise the hereditary material and life's blueprint for all cells, and in many other organic and inorganic compounds.

Where was the element nitrogen discovered?

Daniel Rutherford

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Where is most oxygen found on Earth?

The first two members of the family, oxygen and sulfur, are found in most ores. Oxygen is by far the most abundant element in the Earth's crust. Nearly half of all the atoms in the earth are oxygen atoms. Oxygen also makes up about one-fifth of the Earth's atmosphere.

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How is nitrogen used by plants?

Nitrogen is a component of chlorophyll and therefore essential for photosynthesis. It is also the basic element of plant and animal proteins, including the genetic material DNA and RNA, and is important in periods of rapid growth. Plants use nitrogen by absorbing either nitrate or ammonium ions through the roots.

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Can nitrogen be a liquid?

Liquid nitrogen is nitrogen in a liquid state at an extremely low temperature. It is a colorless clear liquid with a density of 0.807 g/ml at its boiling point (−195.79 °C (77 K; −320 °F)) and a dielectric constant of 1.43.

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What is the coldest thing in the world?

Scientists cooled a copper cube inside a cryostat, the first such container built that can keep substances so close to absolute zero. A chunk of copper became the coldest cubic meter (35.3 cubic feet) on Earth when researchers chilled it to 6 millikelvins, or six-thousandths of a degree above absolute zero (0 Kelvin).

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What organic molecule is nitrogen usually found in?

It is found in amino acids that make up proteins, in nucleic acids, that comprise the hereditary material and life's blueprint for all cells, and in many other organic and inorganic compounds. In addition, nitrogen comprises about 80% of the Earth's atmosphere.

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Where do plants get nitrogen from?

Such organisms are called "diazotrophs". From here, various microorganisms convert ammonia to other nitrogen compounds that are easier for plants to use. In this way, plants get their nitrogen indirectly from the air via microorganisms in the soil and in certain plant roots.

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How is nitrogen cycled?

When plants and animals die or when animals excrete wastes, the nitrogen compounds in the organic matter re-enter the soil where they are broken down by microorganisms, known as decomposers. This decomposition produces ammonia, which can then go through the nitrification process.

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How is nitrogen converted into a usable form?

Nitrogen is converted from atmospheric nitrogen (N2) into usable forms, such as NO2-, in a process known as fixation. The majority of nitrogen is fixed by bacteria, most of which are symbiotic with plants. Recently fixed ammonia is then converted to biologically useful forms by specialized bacteria.

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How much does it cost to buy liquid nitrogen?

The prices vary but this is about it: When delivered in Dewar flasks, liquid nitrogen costs about $2 per gallon but when delivered in bulk storage tanks, it costs about $0.50 per gallon.

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How do plants and animals get nitrogen if it's not from the atmosphere?

All plants and animals need nitrogen to make amino acids, proteins and DNA, but the nitrogen in the atmosphere is not in a form that they can use. When organisms die, their bodies decompose bringing the nitrogen into soil on land or into ocean water. Bacteria alter the nitrogen into a form that plants are able to use.

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What is nitrogen in the soil?

Nitrogen Mineralization in Soils. When absorbed by plants, ammonium and nitrate are incorporated into plant cells as organic, or living, forms of nitrogen. When plants die, microorganisms break down, or decompose, dead plant cells.

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Is a nitrogen gas?

Nitrogen (N2) is a colorless, odorless and tasteless gas that makes up 78.09% (by volume) of the air we breathe. It is commonly thought of and used as an inert gas; but it is not truly inert. It forms nitric oxide and nitrogen dioxide with oxygen, ammonia with hydrogen, and nitrogen sulfide with sulfur.

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Is nitrogen a flammable liquid?

The liquid to gas expansion ratio of nitrogen is 1:694, which means liquid nitrogen boils to fill a volume with nitrogen gas very quickly. Nitrogen is non-toxic, odorless, and colorless. It is relatively inert. It is not flammable.

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Is nitrogen gas liquid or solid?

Below 63 K, nitrogen freezes and becomes a solid. Above 77.2 K, nitrogen boils and becomes a gas. Since it is obtained from the atmosphere, liquid nitrogen is inexpensive and is rarely refrigerated. It is kept in insulated containers called Dewars and is allowed to boil away.

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What would happen if you ate liquid nitrogen?

So, although the nitrogen is non-toxic, this is cold enough to cause instantaneous frostbite. While pin-point-sized droplets of liquid nitrogen on your skin won't pose much of a hazard, the extensive contact you would get from drinking the liquid would cause severe damage to your mouth, esophagus, and stomach.

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Why do we need nitrogen?

Nitrogen is an important part of our bodies. Amino acids all contain nitrogen and these are the building blocks that make up the proteins in your hair, muscles, skin and other important tissues. Nitrogen is an important part of your DNA, which defines what you are like in many ways.

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Can you eat liquid nitrogen?

The main point is that liquid nitrogen must be fully evaporated from the meal or drink before serving, said Peter Barham of the University of Bristol's School of Physics. It can safely be used in food or drink preparation, but it should not be ingested.

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How is the nitrogen cycle used?

This process is called the Nitrogen Cycle. Step 1- Nitrogen Fixation- Special bacteria convert the nitrogen gas (N2 ) to ammonia (NH3) which the plants can use. Step 2- Nitrification- Nitrification is the process which converts the ammonia into nitrite ions which the plants can take in as nutrients.

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What is the difference between liquid nitrogen and dry ice?

Like carbon dioxide, nitrogen is a gas at standard temperature and pressure, and, like carbon dioxide, it must be pressurized and cooled to change state. However, unlike dry ice, when exposed to cold temperatures and high pressure, the gas turns into a liquid.

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