Dictionary » N » Nitrogen



(Science: chemistry) A colourless nonmetallic element, tasteless and odorless, comprising four fifths of the atmosphere by volume. It is chemically very inert in the free state, and as such is incapable of supporting life (hence the name azote still used by french chemists); but it forms many important compounds, as ammonia, nitric acid, the cyanides, etc, and is a constituent of all organised living tissues, animal or vegetable. Symbol N. Atomic weight 14. It was formerly regarded as a permanent noncondensible gas, but was liquefied in 1877 by Cailletet of paris, and Pictet of geneva.

Origin: L. Nitrum natron _ -gen: cf. F. Nitrogene. See Niter.

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Choosing A Black Or Brown Duvet For Sleep Room

... can buy canada goose toronto canada goose women parka One Canada goose can yearly include 1/two pound of phosphorous and way over a pound of nitrogen to a waterway. Their droppings are almost nothing more than uncooked sewerage. Extreme droppings can bring on an increased plant progress which ...

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by goosecanadaca
Sat Oct 04, 2014 8:05 pm
Forum: Molecular Biology
Topic: Choosing A Black Or Brown Duvet For Sleep Room
Replies: 0
Views: 10

Is there any difference between different fertilizers?

Organic and chemical fertilizer ultimately providing the same elements i.e. nitrogen, potassium, phosphorus and other macro and micro nutrients to the plants. There is no difference in atomic structure of elements from both sources. For example, whether nitrogen ...

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by josem
Mon Aug 04, 2014 3:49 pm
Forum: Physiology
Topic: Is there any difference between different fertilizers?
Replies: 1
Views: 829

Agriculture and Microbiology come together (Research Prjct)

... have enough of it, it will keep your Ph at a good steady level. And I also read that these bacteria are needed in order for the plant to even use nitrogen, and thy don't work at a Ph below 7. So they make a layer of slime that allows them to work if their are enough of them. So they could also ...

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by Sophiahotep
Thu Nov 14, 2013 9:29 pm
Forum: Microbiology
Topic: Agriculture and Microbiology come together (Research Prjct)
Replies: 2
Views: 3553

Bacterial Taxonomy

... disk-shaped cyanobacteria may form filamentous structures with reproductive spores, but the presence of heterocysts or the ability to reduce nitrogen gas to ammonia is unique to Cyanobacteria. Proteobacteria are very, very diverse and better discussed in terms of the individual classes alpha, ...

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by wildfunguy
Sat Oct 19, 2013 6:12 pm
Forum: Microbiology
Topic: Bacterial Taxonomy
Replies: 3
Views: 4311

Re: Are carbohydrates hydrophobic?

... and oxygen (CH2O), these elements, always along with the oxygen, tend to be polar in their bonds: "You should remember that oxygen and nitrogen have relatively high affinities for electrons, and therefore oxygen-carbon and oxygen- hydrogen bonds as well as nitrogen-hydrogen bonds are ...

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by HectorEnriquezC
Fri Aug 30, 2013 1:36 am
Forum: Molecular Biology
Topic: Are carbohydrates hydrophobic?
Replies: 7
Views: 15543
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