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Methane clathrate ( CH < sub > 4 </ sub >• 5. 75H < sub > 2 </ sub > O ), also called methane hydrate, hydromethane, methane ice, fire ice, natural gas hydrate, or gas hydrate is a solid clathrate compound ( more specifically, a clathrate hydrate ) in which a large amount of methane is trapped within a crystal structure of water, forming a solid similar to ice.
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Methane and clathrate
# REDIRECT Methane clathrate
Methane clathrate deposits in the ocean floor have been found to be inhabited by polychaete worms of the species Hesiocaeca methanicola.
* Methane clathrate
* Methane clathrate
# REDIRECT Methane clathrate
Methane and CH
Methane is the simplest hydrocarbon with the molecular formula CH < sub > 4 </ sub >.
Methane, ( CH < sub > 4 </ sub >) while not a direct cause of ozone destruction in the stratosphere, does lead to the formation of compounds that destroy ozone.
For instance, the standard enthalpy change of Methane ( CH < sub > 4 </ sub >) is-890. 3 kJ mol < sup >− 1 </ sup >, whereas the standard enthalpy change Hexane ( C < sub > 6 </ sub > H < sub > 14 </ sub >) is-4163. 0 kJ mol < sup >− 1 </ sup >.
For alcohols and alkanes containing the same number of carbon atoms, e. g. Methane ( CH < sub > 4 </ sub >) and Methanol ( CH < sub > 3 </ sub > OH ), the standard enthalpy change of the alkane would be greater than the alcohol ( Methane
* Methane CH < sub > 4 </ sub >: 3. 0 %
* Methane tellurol ( CH < sub > 3 </ sub > TeH )
* Methane, ( CH < sub > 4 </ sub >)
Methane and <
Methane clathrates are restricted to the shallow lithosphere ( i. e. < 2, 000 m depth ).
Since the complete combustion of both of these carbon compounds produce carbon dioxide ( CO < sub > 2 </ sub >) and water ( H < sub > 2 </ sub > O ), there is more bond-breaking and bond-making when Methane is burnt.
Methane burns in oxygen forming water and carbon dioxide often producing a blue hue ( ΔH < sub > c </ sub > =-891 kJ / mol ), The oxygen and nitrogen component of flatus can be accounted for by aerophagy, while the CO < sub > 2 </ sub > component results from the reaction of stomach acids ( HCl ) with pancreatic bile ( NaHCO < sub > 3 </ sub >).
Methane is also released during the reduction of CO < sub > 2 </ sub > by the same bacteria.
Methane, a very active greenhouse gas which reacts with oxygen to produce carbon dioxide and water vapor, may have been more prevalent as well, with a mixing ratio of 10 < sup >− 4 </ sup ></ sup > parts per million by volume .< ref name = " Pavlov ">
Methane has a global warming potential ( GWP ) 23 times that of CO < sub > 2 </ sub >; when combusted, each molecule of methane is converted to one molecule of CO < sub > 2 </ sub >, thus reducing the global warming effect by 96 %.
Methane and 4
Methane has only 4 bonds between its single carbon and four Hydrogen atoms.
Methane is oxidized to carbon dioxide because the oxidation number changes from-4 to + 4.
Methane and 5
Methane comprises over 70 percent of the natural gas reserve, with variable contents of ethane (< 1 % ~ 18 %) and propane (< 0. 5 % ~ 9 %).
Methane and .
Methane is part of a homologous series known as the alkane s, which contain single Chemical bond | bonds only.
Methane could be produced from electricity of renewable energies.
Methane would be stored and used to produce electricity later.
Methane production, storage and adjacent combustion would recycle all the reaction products, creating a low carbon cycle.
* May 23 – Methane gas explosion at Abbeystead water treatment works in Lancashire, England kills 16 people.
Methane is twenty times more potent a greenhouse gas than carbon dioxide.
Methane gas is lighter than air and thus does not accumulate near the ground ; any localized pockets of methane in the open air would rapidly dissipate.
Methane can be found in hydrocarbon fields, alone, associated with oil, or in the form of methane clathrates.
* Mr. Methane
Methane, released by heating, burns ; water drips.
Methane clathrates are common constituents of the shallow marine geosphere, and they occur both in deep sedimentary structures, and as outcrops on the ocean floor.
Methane hydrates are believed to form by migration of gas from depth along geological faults, followed by precipitation, or crystallization, on contact of the rising gas stream with cold sea water.
Methane clathrates are also present in deep Antarctic ice cores, and record a history of atmospheric methane concentrations, dating to 800, 000 years ago.
Methane forms a structure I hydrate with two dodecahedral ( 12 vertices, thus 12 water molecules ) and six tetradecahedral ( 14 water molecules ) water cages per unit cell.
Methane hydrate phase diagram.
Methane is a powerful greenhouse gas.
* Methane Hydrates-discusses U. S. government funding of methane hydrates research
* All About Hydrates-Necessary Conditions for Methane Hydrate Formation U. S. Department of Energy
Methane and ),
Methane in the Earth's atmosphere is an important greenhouse gas with a global warming potential 25 times greater than carbon dioxide ( averaged over 100 years ), and methanogenesis in livestock and the decay of organic material is thus a considerable contributor to global warming.
Coalbed methane ( CBM or Coal Bed Methane ), coalbed gas, or coal mine methane ( CMM ) is a form of natural gas extracted from coal beds.
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