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| noble gas (chemical elements) -- Britannica Online Encyclopedia http://www.britannica.com noble gas (chemical elements), any of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table. The elements are helium (He), ... |
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| Chemical warfare - Wikipedia, the free encyclopedia http://en.wikipedia.org Chemical weapons were known and used in ancient and medieval China. Polish chronicler Jan Długosz mentions usage of poisonous gas by the Mongol army in 1241 ... |
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| New Noble Gas Chemical Compounds Created http://www.sciencedaily.com Mar 23, 2005 ... Chemical compounds consisting of noble gases combined with hydrocarbon molecules – a feat previously thought to be unattainable – have been ... |
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| Chemical Elements.com - Noble Gases http://www.chemicalelements.com The six noble gases are found in group 18 of the periodic table. These elements were considered to be inert gases until the 1960's, because their oxidation ... |
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| Chemical of the Week -- Gases that emit light http://scifun.chem.wisc.edu When an electric current is passed through a gas, the gas emits light. This emission is exploited in many electric lamps. Fluorescent lamps, “neon” signs, ... |
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| Early Chemistry and Gases | Chemical Heritage Foundation http://www.chemheritage.org The Chemical Revolution of the late 18th century was based in large part on Antoine-Laurent Lavoisier's new understanding of the chemical role of a ... |
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| Chemical Process and Petrochemical Gases Information on GlobalSpec http://www.globalspec.com Chemical process and petrochemical gases include pure gases, gas mixtures or gas standards for reactions, water treatment, sterilization, ... |
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| Noble Gases - body, used, Earth, life, chemical, form, energy ... http://www.scienceclarified.com The most important chemical property of the noble gases is their lack of reactivity. Helium, neon, and argon do not combine with any other elements to form ... |
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| american gas & chemical co - Glossary http://www.amgas.com Gas Detection Instrument is an assembly of electrical, mechanical and chemical components (either a single integrated unit or a system comprised of two or ... |
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| Chemical Species Gas Sensors Home http://www.grc.nasa.gov Feb 25, 2008 ... The NASA Glenn Chemical Species Gas Sensors Team is developing gas sensing technology for aeronautic and space applications. ... |
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