Mercury

hectogram The divisor hectogram or Hg is an extremely strained admixture and is the only metal that is a smooth-spoken at room temperature. Often called quicksilver due to its silvery- sportsmanlike pretension mercury was named after the planet mercury. Although its a good t heat upre director of electricity mercury is a poor conductor of heat and its a fairly unreactive metal and is also extremely resistant to corrosion. hydrargyrums name derived from the Latin word Hydragyrum or liquid silver. The disc everyplaceer of mercury is un cognise but it is a known fact that mercury was well known to the Chinese and samples of the element have been found in Egypt that date back to 1500b.c. . Mercury is rarely found as a pure metal in nature, but its chief ore cinnabar or cinnabar which is a bright red metal that is made up of mercury sulfide & is mainly found in Italy and in Spain where there are mercury mines that have been operating for over 2,000 years. Metallic mercury is recovered from the cinnabar by heat up it in air and condensing the mercury vapor. Mercury melts at ?38.87 degrees Celsius and boils at ?356.58 degrees Celsius. Washing it with nitric acid followed by distillment quite a little purify Mercury. Mercury is sold and traded in the orbit markets in units called flasks 1 flask is equal to 76 pounds. roughly of the commercial uses of mercury include thermometers, barometers, fluorescent lamps, electrical switches and batteries. Mercury is highly suitable for thermometers because it doesnt moisten the glass and thermal amplification is uniform. At 239k the density of mercury is 13.456 g/cm3. A mingled of mercury called mercurous nitrate was once utilise in the manufacturing process of felt hats and workers that came in contact with it developed upright heath problems like the loss of hair, teeth and memory and constipation of their nervous system. Mercury batteries consist of zinc anode and a mercuric oxide called cathode and the batteries develop about 4.35 volts. In many early civilizations mercury was used to fight away evil spirits and the Greeks used it for medicine. The 2 most useful mercury salts are twain of the mercury chlorides and mercury sulfide. Mercurus chloride or mercurous chloride is a white relatively soluble salt that is used in calomel electrodes, which are used in Electro chemistry. Calomel is used in medicines as a cathartic and diuretic. When calomel is used in teething powder for children it can actually poison them.



mercuric chloride or corrosive sublimate is highly poisonous because it is so soluble and was used for deliberate inebriations as early as the 14th century. mercurous chloride is also used as a disinfectant for preparing other mercury compounds and in anti-fungal skin ointments. Mercuric sulfide occurs in a red form and an uncrystallized black form. There are 2 types of mercury drunkenness that exist: acute and chronic. Acute mercury poisoning results from consumption of a soluble mercury salt, which can violently deplete the skin and mucus membranes. If mercury vapor is breathed into the lungs it can cause severe pneumonia or death. Chronic mercury poisoning occurs through regular absorption of small amounts of mercury which is often a problem for the workers in mercury mines and industries that use mercury. When mercury salts are released into the environment frequently it may be reborn by anaerobic bacteria into such compounds that are thence carried through the food chain to humans like at the disaster at Manama Bay, Japan.

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