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Magnesium (pronounced /mæɡˈniːziəm/, mag-NEE-zee-əm) is a chemical element with the symbol Mg, atomic number 12 and common oxidation number +2. It is an alkaline earth metal and the eighth most abundant element in the earth's crust by mass, although ninth in the Universe as a whole. This preponderance of magnesium is related to the fact that it is easily built up in supernova stars from a sequential addition of three helium nuclei to carbon (which in turn is made from three helium nuclei). Magnesium constitutes about 2% of the Earth's crust by mass, which makes it the eighth most abundant element in the crust. Magnesium ion's high solubility in water helps ensure that it is the third most abundant element dissolved in seawater. Magnesium is the 11th most abundant element by mass in the human body; its ions are essential to all living cells, where they play a major role in manipulating important biological polyphosphate compounds like ATP, DNA, and RNA. Hundreds of enzymes thus require magnesium ions in order to function. Magnesium is also the metallic ion at the center of chlorophyll, and is thus a common additive to fertilizers. Magnesium compounds are used medicinally as common laxatives, antacids (i.e., milk of magnesia), and in a number of situations where stabilization of abnormal nerve excitation and blood vessel spasm is required (i.e., to treat eclampsia). Magnesium ions are sour to the taste, and in low concentrations help to impart a natural tartness to fresh mineral waters. The free element (metal) is not found naturally on Earth, since it is highly reactive (though once produced, is coated in a thin layer of oxide—see passivation—which partly masks this reactivity). The free metal burns with a characteristic brilliant white light, making it a useful ingredient in flares. The metal is now mainly obtained by electrolysis of magnesium salts obtained from brine. Commercially, the chief use for the metal is as an alloying agent to make aluminium-magnesium alloys, sometimes called "magnalium" or "magnelium". Since magnesium is less dense than aluminium, these alloys are prized for their relative lightness and strength. From Wikipedia under the
GNU Free Documentation License How to Seperate Magnesium Hydroxide from a Solution of Water and Na2SO4? Q. Does anyone have any suggestions regarding how to seperate magnesium hydroxide from a solution of water and sodium sulfate? The magnesium hydroxide is supended in the solution, and is often called Milk of Magnesium in this form. It was formed by mixing a solution of sodium hydroxide with a solution of magnesium sulfate. Thanks. Asked by Nick P - Fri Nov 30 04:03:30 2007 - - 1 Answers - 0 Comments A. As you have said, magnesium hydroxide is suspended in the solution. This means that magnesium hydroxide is insoluble in water. ALL Group 1 and ammonium salts are soluble in water. So, Na2SO4 will dissolve in water. Hence to separate magnesium hydroxide, you stir the solution first to ensure that all Na2SO4 have dissolved in water. Now, you're left with a solution of Na2SO4 with Mg(OH)2 settled at the bottom. Filter the solution. Mg(OH)2 will be obtained as residue and Na2SO4 will be obtained as filtrate. There you go. Answered by Tinky - Fri Nov 30 04:56:32 2007 Is there a test to tell the difference between magnesium and aluminum? Q. Is there an easy way to tell the difference? Will aluminum stick to magnesium by tig? Asked by elmechino - Fri Oct 19 08:04:18 2007 - - 5 Answers - 0 Comments A. Well their is always density, mass spectrometry, or magnesium shaving ignite at a relatively low temperature. Density is probably the easiest, figure out the mass per unit of volume and look it up on the periodic table. Answered by Brian K - Fri Oct 19 08:08:10 2007 Is there a quick and easy way to differentiate between Aluminum and Magnesium?
Q. If I had a piece of aluminum in one hand and a piece of Magnesium in the other, other than weight, how could I determine which is which? I there a simple test? Asked by JackMS. - Sat Nov 25 18:45:15 2006 - - 5 Answers - 0 Comments A. I don't know if this is simple, but... You could burn/heat both in separate crucibles. The aluminum would develop a layer of white oxide that only coats the metal, whereas the magnesium would completely turn into a powdery, white oxide. Answered by Katya S - Sat Nov 25 18:50:51 2006 From Yahoo Answer Search: "Magnesium"
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 news.google.com Wall Street Pit (blog) You should keep your calcium, magnesium and zinc levels in the normal range also, calcium 1000 mg, magnesium 500 mg, zinc 15 mg, as Vitamin D uploads these ... Headaches Can be Relieved with Calcium and Vitamin D PR-USA.net (press release) all 2 news articles » news.google.com Reuters Inulin also increases calcium and magnesium absorption which aids essential blood, muscle and nerve functions. Sold in original and vanilla varieties in a ... VivAgave Launches Inulin At Whole Foods Market Across US Food Business Review all 11 news articles » news.google.com The Saratogian Certain diuretic medications can also cause cramping due to a loss of sodium, potassium and magnesium . Typically, muscle cramps require no treatment other ... From Google News Search: "Magnesium"  nutranews.org 214px x 245px | 12.40kB [source page] Le magnesium Lorsque les niveaux de magnesium declinent l incidence des allergies et de l asthme augmente Le magnesium a ete utilise dans le traitement des crises d asthme Il diminue l activite From Yahoo Image Search: "Magnesium"  articlebliss.com unknown Sat, 19 Dec 2009 20:33:06 GM Dead Sea water also contains a natural tar called "Bitumen" which, along with . magnesium. and silicates, form the world's famous black mud of the Dead Sea. This black mud helps in clarifying and nourishing your skin, and retains moisture. ...  thebiggeststudy.blogspot.com The Professor Fri, 18 Dec 2009 21:31:00 GM Brazilian testing allegedly found "absolutely pure" . magnesium. , and the legend of an "unmakeable" [by our hands] piece of metal raced around the UFO community. Fontes sent several of the fragments to Coral Lorenzen at APRO. ...  metal-pages.com unknown Fri, 04 Dec 2009 12:12:26 GM Magnesium. metal smelters raised their quotations this week, on the back of increased production costs. But market demand remains slow and the future market is not expected to pick up much further. Tungsten miners continued to hold ... From Google Blog Search: "Magnesium" |
Magnesium
Magnesium
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