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Thursday, February 28, 2013

Hudrogen

heat content Essay
Hydrogen was discovered as a go bad element by Henry Cavandish in 1766. The physical properties of total heat argon as follows. Hydrogen is categorized as an stem metal. In Hydrogens physical state (at 20°C & 1atm) it is a gas. Its crystal structure is hexagonal in shape. Hydrogen has an atomic mass of 1.00794 atomic mass units, make it the lightest known element. Hydrogen has a boiling point of 20.268 K, 252.732°C, and 422.918°F. It has a melting point of 14.025K or 434°F. Also it has Heat of vapor of 0.44936kJ/mol. Hydrogen will too become a still at -240°C and a pressure of 13atm. Hydrogen is meagerly soluble in body of water. This element also has a stringency of 0.0899g/L @ 273K & 1atm. The electron configuration of hydrogen is 1s1. Hydrogen is tasteless, colorless, odorless, extremely explosive and extremely flammable.

Three ways of obtaining hydrogen are electrolysis of water, displacing it from the water molecular by the use of a metal, and the intersection of hydrogen by bacteria.

In the electrolysis of water, an electrical current is passed finished water to cause it to decompose, is one of the most common methods of obtaining hydrogen, it is also the most dangerous.

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Another method of obtaining water is to displace it from the water molecule by using a metal such(prenominal) as zinc or iron. Bacteria and certain(prenominal) types of alga can also be used to gain hydrogen. An enzyme of certain algae absorbs the suns solar energy, these acts as a catalyst in splitting water molecules. The bacteria that produce hydrogen produce hydrogen in the same way algae do, precisely they differ in that bacteria need a substrate to grow on.

Hydrogen has many useful and interesting applications. Hydrogen can be used in the food application to convert liquid fats to into solid shortenings (hydrogenation). The majority of hydrogen is born-again into ammonia (by the Haber process). About a third is used to skip copper and other metals from their ores (hydrometallurgical...If you want to get a dear essay, order it on our website: Orderessay



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