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Lead was found to be lethal at low levels and sodium tungstate was much less toxic, but the tungstate completely inhibited their reproductive ability. [131] Tungsten has been studied as a biological copper metabolic antagonist, in a role similar to the action of molybdenum.
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74 W tungsten; use: 17.6 g/cm 3: CR2 (at m.p.) ... 82 Pb lead; use: 10.66 g/cm 3: CR2 (at m.p.) 10.66 g/cm 3: ... formula weight = 222 Notes
An average 70 kg human body is about 0.01% heavy metals (~7 g, equivalent to the weight of two dried peas, with iron at 4 g, zinc at 2.5 g, and lead at 0.12 g comprising the three main constituents), 2% light metals (~1.4 kg, the weight of a bottle of wine) and nearly 98% nonmetals (mostly water).
74 W tungsten; use 6.06 nΩm 48.2 nΩm 52.8 nΩm 53.9 nΩm 54.4 nΩm 103 nΩm ... 82 Pb lead; use 49 nΩm 192 nΩm 208 nΩm 211 nΩm 213 nΩm 383 nΩm
Tungsten carbide (chemical formula: WC) is a chemical compound (specifically, a carbide) containing equal parts of tungsten and carbon atoms. In its most basic form, tungsten carbide is a fine gray powder, but it can be pressed and formed into shapes through sintering [7] for use in industrial machinery, engineering facilities, [8] molding blocks, [9] cutting tools, chisels, abrasives, armor ...
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