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  2. Prices of chemical elements - Wikipedia

    en.wikipedia.org/wiki/Prices_of_chemical_elements

    Graphite flakes can cost around US$0.9/kg carbon. [20] Price of synthetic industrial diamond for grinding and polishing can range from 1200 to 13 300 USD/kg, while cost per weight of large synthetic diamonds for industrial applications can be on the order of million dollars per kilogram. [21] 7: N: Nitrogen: 0.0012506: 19 (5.263 × 10 17 kg) 0. ...

  3. From Seagull Poop to Plutonium: The Most Valuable ... - AOL

    www.aol.com/gold-caviar-most-valuable-substances...

    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 ...

  4. Direct material usage variance - Wikipedia

    en.wikipedia.org/wiki/Direct_material_usage_variance

    Let us assume that standard direct material cost of widget is as follows: 2 kg of unobtainium at € 60 per kg ( = € 120 per unit). Let us assume further that during given period, 100 widgets were manufactured, using 212 kg of unobtainium which cost € 13,144. Under those assumptions direct material usage variance can be calculated as:

  5. Energy density Extended Reference Table - Wikipedia

    en.wikipedia.org/wiki/Energy_density_Extended...

    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 ...

  6. Iridium - Wikipedia

    en.wikipedia.org/wiki/Iridium

    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]

  7. Aluminum Can Prices: Are They Still Worth Collecting?

    www.aol.com/aluminum-prices-much-yours-worth...

    The exact number of cans per pound can't be quantified due to different measurements. Depending on the brand, estimates show there are usually 32 to 35 cans per pound. For smaller, more common 12 ...

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  9. Synthesis of precious metals - Wikipedia

    en.wikipedia.org/wiki/Synthesis_of_precious_metals

    Each kilogram of the fission products of 235 U will contain 63.44 grams of ruthenium isotopes with halflives longer than a day. Since a typical used nuclear fuel contains about 3% fission products, one ton of used fuel will contain about 1.9 kg of ruthenium. The 103 Ru and 106 Ru will render the fission ruthenium very radioactive.