Online information reference to the periodic table of the elements, complete description of history of discovery, physical properties, extraction methods and data on natural abundance, thermal conductivity and so on.
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Periodic Table of the Elements, information about elements from Etacude.com | elements.etacude.com Reviews
https://elements.etacude.com
Online information reference to the periodic table of the elements, complete description of history of discovery, physical properties, extraction methods and data on natural abundance, thermal conductivity and so on.
elements.etacude.com
Information on helium: Etacude.com
http://elements.etacude.com/He.php
In 1961, the International Union of Pure and Applied Chemistry adopted the isotope carbon-12 as the basis of atomic weight, which has a mass of exactly 12.000 atomic mass unit. He (301602931) - 0.000137%. He (400260325) - 99.999863%. From Greek word helios. 2800 pm (van der Waal diameter). 2722 C (26 atm). 0152 (27 C), 0.142 (0 C). 1248 (b.p.), 0.1785 (0 C). Standard Thermodynamic Data (atomic gas). Gibbs free energy of formation. Not stable) Electronegativity (Pauline). 23723, 5250.4, - kJ/mol.
Information on hydrogen, deuterium and tritium: Etacude.com
http://elements.etacude.com/H.php
Cesium is used in atomic clock. As in 1999, the best clock is accurate to a second in 20 million years. H (10078250) - 99.985%. H (20141017) - 0.015%. H (30160492) - 0.00%. Derive from the Greek word Hydros genes. Meaning "water forming". Discovered in 1766 by H. Cavendish at London, England. Produced mainly from the catalytic steam-hydrocarbon process using natural gas or oil-refinary feedstock. H or deuterium (D) is also used, in the form of heavy water (D. Standard Thermodynamic Data (atomic gas).
Information on fluorine: Etacude.com
http://elements.etacude.com/F.php
Henri Moissan isolated fluorine in 1886, after 70 years of continuous efforts by other scientists and some ended in tragedy with the lost of life. F (189984032) - 100.0%. Flowing which is related to the early use of fluorspar (CaF. It is used in the production of aluminium. Such as fluorspar (left) and fluorapatite, Ca. F Cryolite is a rare mineral and is only commercially available in Greenland. Cryolite that is used in the production of aluminium. Are in fact largely synthetic. The reactivity is due to...
Introducing Science Partner Chemicool from Etacude.com
http://elements.etacude.com/etacude-chemicool.php
Has an atomic weight of 15.9994 and it was discovered in 1774. Iron. With Fe as its symbol, has a melting point of 1808.2 K and it is fairly soft when pure. Chemicool has a number of useful features for teachers and students to use like the Unit Conversion. Calculator, and the Ideal Gas Law. Calculator where you can even mix SI units with English units and still get the right answer. There's also a dictionary. Of chemical terms for reference. You can also find a forum. Quote of the moment.
Information on aluminium - history, thermodynamic, physical and electronic properties: Etacude.com
http://elements.etacude.com/Al.php
Cesium is used in atomic clock. As in 1999, the best clock is accurate to a second in 20 million years. Al (26.981538) - 100.0%. Meaning bitter salt. It derives its name from alum, KAl(SO. O, where the ancient Greek and Roman used it in medicine as an astringent and as a mordant in dyeing. In 1807, H. Davy, who was not able to isolate the metal, proposed the name alumium. And later changed to aluminum. 2698 (20 C), 2390 (m.p.). Standard Thermodynamic Data (atomic gas). Gibbs free energy of formation.
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Electromagnetic units from Etacude.com
http://data.etacude.com/units/e.php
Coulomb per cubic meter. Coulomb per square meter. Electric potential, potential difference.
Mass units from Etacude.com
http://www.data.etacude.com/units/m.php
Dram, drachm (Avoirdupois). Unified atomic mass unit.
Chemical and physical from Etacude.com
http://data.etacude.com/units/c.php
Energy, heat, work. Energy, heat, work. Energy, work, heat. Joule per cubic meter. Heat capacity, entropy. Joule per kilogram kelvin. Specific heat capacity, specific entropy. Joule per mole kelvin. Molar entropy, molar heat capacity. Nautical mile per hour. Power, radiant flux. Watt per meter kelvin.
Universal constants from Etacude.com
http://data.etacude.com/constants/universal.php
Characteristic impedence of vacuum. Permittivity of free space). 8854187817. x 10. Permeability of free space). Newtonian constant of gravitation. Speed of light in vacuum.
Physico-chemical constants from Etacude.com
http://data.etacude.com/constants/phychem.php
Molar volume of ideal gas. Wien displacement law constsnt.
Oxygen based chemicals from Etacude.com
http://chemicals.etacude.com/table/O.php
Chemical formula begins with: O (Oxygen). No chemical entry at the moment.
Aluminium based chemicals from Etacude.com
http://chemicals.etacude.com/table/Al.php
Chemical formula begins with: Al (Aluminium). Aluminium ammonium sulfate dodecahydrate. Aluminium sulfate, anhydrous. Aluminium sulfate, octadecahydrate.
Fluorine based chemicals from Etacude.com
http://chemicals.etacude.com/table/F.php
Chemical formula begins with: F (Fluorine).
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Periodic Table of the Elements, information about elements from Etacude.com
This is the online scientific reference and dictionary of the elements. The elements are arranged in the standard periodic table format as shown below. Click on the elements to reveal their properties, uses and history. Display elements in order:. The atomic number, element name and symbol will always be shown.). Data that are not available will not be sorted.). The version of the periodic table is based on the recommendation of the Commission on the Nomenclature of Inorganic Chemistry.
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