Copper plating and copper sheathing were widely used to protect the under-water hulls of ships, a technique pioneered by the British Admiralty in the 18th century. It dropped to $2.40/lb ($5.29/kg) in February 2007, then rebounded to $3.50/lb ($7.71/kg) in April 2007. They are very reactive towards oxygen to form copper(I) oxide and have many uses in chemistry. you will get the total cupper in one meter and multiply that with 1000 .you will get the 1km cable conductor wieght. [65] For example, in the Kharasch–Sosnovsky reaction. Copper doorknobs are used by hospitals to reduce the transfer of disease, and Legionnaires' disease is suppressed by copper tubing in plumbing systems. [106], Copper has been used since ancient times as a durable, corrosion resistant, and weatherproof architectural material. Copper is also found in many superoxide dismutases, proteins that catalyze the decomposition of superoxides by converting it (by disproportionation) to oxygen and hydrogen peroxide: The protein hemocyanin is the oxygen carrier in most mollusks and some arthropods such as the horseshoe crab (Limulus polyphemus). Molecular weight: 63.546 g/mol. LAB 4: FORMULA WEIGHT OF A COPPER COMPOUND Name_____ Student Learning Outcomes: After completing this experiment, students will have experience in-Reacting an unknown copper compound with magnesium.-Filtering the copper metal from the reaction.-Determining the formula weight of an unknown compound given the amount of copper recovered. Square of one side X 12 X density of alloy = weight … Copper is a heavy metal trace element. [99] Many electrical devices rely on copper wiring because of its multitude of inherent beneficial properties, such as its high electrical conductivity, tensile strength, ductility, creep (deformation) resistance, corrosion resistance, low thermal expansion, high thermal conductivity, ease of soldering, malleability, and ease of installation. It was an important resource for the Romans, Greeks and other ancient peoples. Online metal weight calculator which helps to calculate the weight of Copper Pipe metal. For a short period from the late 1960s to the late 1970s, copper wiring was replaced by aluminium wiring in many housing construction projects in America. [32] Heating this material with silica in flash smelting removes much of the iron as slag. RDAs. Molecular formula: Cu. [89] Major districts included the Keweenaw district of northern Michigan, primarily native copper deposits, which was eclipsed by the vast sulphide deposits of Butte, Montana in the late 1880s, which itself was eclipsed by porphyry deposits of the Souhwest United States, especially at Bingham Canyon, Utah and Morenci, Arizona. [27] Recycling is a major source of copper in the modern world. Ralph L. Shriner, Christine K.F. [114][115][116][117] Architectural copper and its alloys can also be 'finished' to take on a particular look, feel, or color. For bulk stoichiometric calculations, we are usually determining molar mass, which may also be called standard atomic weight or average atomic mass. Electromagnets, vacuum tubes, cathode ray tubes, and magnetrons in microwave ovens use copper, as do waveguides for microwave radiation. The seven heavenly bodies known to the ancients were associated with the seven metals known in antiquity, and Venus was assigned to copper.[80]. Copper is a chemical element with the symbol Cu (from Latin: cuprum) and atomic number 29. It is a reddish lustrous malleable odorless metallic solid. Generation of scalable, metallic high-aspect ratio nanocomposites in a biological liquid medium. The characteristic color of copper results from the electronic transitions between the filled 3d and half-empty 4s atomic shells – the energy difference between these shells corresponds to orange light. of cores x cross-section of one core x 9,6 = copper weight in kg/km e.g. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. in pure water, or acidic or alkali conditions. Ancient Egyptians (~2400 BC) used copper for sterilizing wounds and drinking water, and later to treat headaches, burns, and itching. [47] Copper compounds, whether organic complexes or organometallics, promote or catalyse numerous chemical and biological processes.[48]. [169][170], In the US, the Occupational Safety and Health Administration (OSHA) has designated a permissible exposure limit (PEL) for copper dust and fumes in the workplace as a time-weighted average (TWA) of 1 mg/m3. ", "Penny Hoarders Hope for the Day The Penny Dies", "Copper bracelets and magnetic wrist straps for rheumatoid arthritis – analgesic and anti-inflammatory effects: a randomised double-blind placebo controlled crossover trial", "Therapeutic effects of magnetic and copper bracelets in osteoarthritis: A randomised placebo-controlled crossover trial", "Metals, minerals and microbes: geomicrobiology and bioremediation", "Amount of copper in the normal human body, and other nutritional copper facts", Dietary Reference Intakes: RDA and AI for Vitamins and Elements, Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Copper, "Overview on Dietary Reference Values for the EU population as derived by the EFSA Panel on Dietetic Products, Nutrition and Allergies", "Federal Register May 27, 2016 Food Labeling: Revision of the Nutrition and Supplement Facts Labels. JoVE (Journal of Visualized Experiments), (101), p.e52901. Compounds that contain a carbon-copper bond are known as organocopper compounds. In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all … AI and UL defined the same as in United States. Formula: [132][133] Some people invest in copper through copper mining stocks, ETFs, and futures. Severe deficiency can be found by testing for low plasma or serum copper levels, low ceruloplasmin, and low red blood cell superoxide dismutase levels; these are not sensitive to marginal copper status. Molar volume: 7.108 cm³/mol. FR p. 33982", "Daily Value Reference of the Dietary Supplement Label Database (DSLD)", "FDA provides information about dual columns on Nutrition Facts label", "Industry Resources on the Changes to the Nutrition Facts Label", "The immune system as a physiological indicator of marginal copper status? Kronborg completed; Agency for Palaces and Cultural Properties, København. The filled d-shells in these elements contribute little to interatomic interactions, which are dominated by the s-electrons through metallic bonds. Pops, Horace, 2008, "Processing of wire from antiquity to the future". Cytochrome c oxidase is the protein that binds the O2 between a copper and an iron; the protein transfers 8 electrons to the O2 molecule to reduce it to two molecules of water. Weight Calculator Metal gets heavy, and whether you want to see how much shipping is likely to be, or if your vehicle (or back) can handle it, it’s good to know what your order weighs. 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