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This is a list of prices of chemical elements. Listed here are mainly average market prices for bulk trade of commodities. ... Per-kilogram prices of some synthetic ...
Cost: $53.37 per gram. Iridium is a hard, silvery metal that is one of the rarest in the world. ... Cost: $100,000 per kilogram. ... it requires several hundred million pounds just to create one ...
15. Iridium. Cost: $162.26 per gram. Iridium is a hard, silvery metal that is one of the rarest in the world. It's also extremely corrosion resistant. Iridium is mainly used as a hardening agent ...
Iridium in bulk metallic form is not biologically important or hazardous to health due to its lack of reactivity with tissues; there are only about 20 parts per trillion of iridium in human tissue. [22] Like most metals, finely divided iridium powder can be hazardous to handle, as it is an irritant and may ignite in air. [66]
The international prototype of the kilogram (IPK) is an artifact standard of platinum–iridium alloy that was defined as having a mass of exactly one kilogram. Platinum–iridium alloys are alloys of the platinum group precious metals platinum and iridium. Typical alloy proportions are 90:10 or 70:30 (Pt:Ir).
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Energy density by mass (MJ/kg) Energy density by volume (MJ/L) Peak recovery efficiency % Practical recovery efficiency % Notes This page was last edited on 5 ...
R-410A is a refrigerant used in air conditioning and heat pump applications. It is a zeotropic but near- azeotropic mixture of difluoromethane (CH 2 F 2 , called R-32) and pentafluoroethane (CHF 2 CF 3 , called R-125).