enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Nitrogen - Wikipedia

   en.wikipedia.org/wiki/Nitrogen

   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 .

3. Chemical symbol - Wikipedia

   en.wikipedia.org/wiki/Chemical_symbol

   Chemical symbols are the abbreviations used in chemistry, mainly for chemical elements; but also for functional groups, chemical compounds, and other entities. Element symbols for chemical elements, also known as atomic symbols , normally consist of one or two letters from the Latin alphabet and are written with the first letter capitalised.

4. List of chemical elements - Wikipedia

   en.wikipedia.org/wiki/List_of_chemical_elements

   A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z). [ 1 ] The definitive visualisation of all 118 elements is the periodic table of the elements , whose history along the principles of the periodic law was one of the founding ...

5. Pnictogen - Wikipedia

   en.wikipedia.org/wiki/Pnictogen

   Nitrogen makes up 25 parts per million of the Earth's crust, 5 parts per million of soil on average, 100 to 500 parts per trillion of seawater, and 78% of dry air. Most nitrogen on Earth is in nitrogen gas, but some nitrate minerals exist. Nitrogen makes up 2.5% of a typical human by weight. [citation needed]

6. CHNOPS - Wikipedia

   en.wikipedia.org/wiki/CHNOPS

   Graphic representation of carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur. CHNOPS and CHON are mnemonic acronyms for the most common elements in living organisms. "CHON" stands for carbon, hydrogen, oxygen, and nitrogen, which together make up more than 95 percent of the mass of biological systems. [1] "CHNOPS" adds phosphorus and ...

7. Liquid nitrogen - Wikipedia

   en.wikipedia.org/wiki/Liquid_nitrogen

   Liquid nitrogen is a compact and readily transported source of dry nitrogen gas, as it does not require pressurization. Further, its ability to maintain temperatures far below the freezing point of water, specific heat of 1040 J ⋅kg −1 ⋅K −1 and heat of vaporization of 200 kJ⋅kg −1 makes it extremely useful in a wide range of ...

8. South Korea extends shutdown of Muan airport due to crash probe

   www.aol.com/news/south-korea-extends-shutdown...

   South Korea's government said on Monday it will extend the shutdown of Muan International Airport by a week to Jan. 14, citing the ongoing investigation into the crash of a Jeju Air jet that ...

9. Ammonia - Wikipedia

   en.wikipedia.org/wiki/Ammonia

   Ammonia is an inorganic chemical compound of nitrogen and hydrogen with the formula N H 3. ... Pearson symbol cP16, space group P2 1 3 No.198, lattice constant 0.5125 ...