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  2. Prices of chemical elements - Wikipedia

    en.wikipedia.org/wiki/Prices_of_chemical_elements

    0.000 125: 2012: DOE Hydrogen: Prices of hydrogen produced by distributed steam methane reforming, as predicted by H2A Production Model from United States Department of Energy, assuming price of natural gas of US$3/MMBtu (US$10/MWh; US$0.10/m 3). Does not include cost of storage and distribution. 1: 2 H (D) Deuterium: 0.0001667: 13 400: 2.23: ...

  3. January 6 United States Capitol attack - Wikipedia

    en.wikipedia.org/wiki/January_6_United_States...

    Background For a chronological guide, see Timeline of the January 6 United States Capitol attack. Attempts to overturn the presidential election Main article: Attempts to overturn the 2020 United States presidential election President Donald Trump speaking at a campaign rally in Goodyear, Arizona, in October 2020 Joe Biden, of the Democratic Party, defeated incumbent Republican Party president ...

  4. Northrop B-2 Spirit - Wikipedia

    en.wikipedia.org/wiki/Northrop_B-2_Spirit

    The cost to procure each B-2 was US$737 million in 1997 dollars (equivalent to US$1300 million in 2021), based only on a fleet cost of US$15.48 billion. The procurement cost per aircraft, as detailed in GAO reports, which include spare parts and software support, was $929 million per aircraft in 1997 dollars.

  5. Daric - Wikipedia

    en.wikipedia.org/wiki/Daric

    Darius I (521–486 BC) introduced a new thick gold coin which had a standard weight of 8.4 grams, [3] [4] equaling in value 20 silver coins. The gold used in the coins was of very high quality with a purity of 95.83% [5] and it bore the image of the Persian king or a great warrior armed with a bow and arrow. Their use ended with Alexander the ...

  6. Troy weight - Wikipedia

    en.wikipedia.org/wiki/Troy_weight

    Troy ounce is a traditional unit of gold weight. Troy weight is a system of units of mass that originated in 15th-century Kingdom of England [1] and is primarily used in the precious metals industry. The troy weight units are the grain, the pennyweight (24 grains), the troy ounce (20 pennyweights), and the troy pound (12 troy ounces).

  7. Deaths due to the Chernobyl disaster - Wikipedia

    en.wikipedia.org/wiki/Deaths_due_to_the...

    Parts of his skin received as much as 400-500Gy of radiation. Skin and intestinal injuries. Unit #4 Shift leader: A senior reactor operator, at the controls in the control room at the time of the explosion; received fatal dose during attempts to restart feedwater flow into the reactor in room 714/2 along with Toptunov, Nekhaev, Uskov and Orlov.

  8. Synthesis of precious metals - Wikipedia

    en.wikipedia.org/wiki/Synthesis_of_precious_metals

    Precious metals occurring as fission products. Ruthenium and rhodium are precious metals produced as a small percentage of the fission products from the nuclear fission of uranium. The longest half-lives of the radioisotopes of these elements generated by nuclear fission are 373.59 days for ruthenium and 45 days for rhodium [clarification needed].

  9. Costco - Wikipedia

    en.wikipedia.org/wiki/Costco

    The cost is partly driven by the cost of real estate, as each new store means that they need enough space to support a building of approximately 150,000 square feet (14,000 m 2) in size, a large parking lot, and often a gas station. Lighting costs are reduced on sunny days because most Costco locations have several skylights.