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  2. Prices of chemical elements - Wikipedia

    en.wikipedia.org/wiki/Prices_of_chemical_elements

    Z Symbol Name Density [a] (⁠ kg / L ⁠) Abundance and total mass in Earth's crust [b] (⁠ mg / kg ⁠) Price [7] Year Source Notes USD/kg USD/L [c] 1: H: Hydrogen: 0.00008988: 1400 (3.878 × 10 19 kg)

  3. Lifting gas - Wikipedia

    en.wikipedia.org/wiki/Lifting_gas

    Therefore, the amount of mass that can be lifted by helium in air at sea level is: (1.292 - 0.178) kg/m 3 = 1.114 kg/m 3. and the buoyant force for one m 3 of helium in air at sea level is: 1 m 3 × 1.114 kg/m 3 × 9.8 N/kg= 10.9 N. Thus hydrogen's additional buoyancy compared to helium is: 11.8 / 10.9 ≈ 1.08, or approximately 8.0%

  4. Helium - Wikipedia

    en.wikipedia.org/wiki/Helium

    Helium is the least water-soluble monatomic gas, [96] and one of the least water-soluble of any gas (CF 4, SF 6, and C 4 F 8 have lower mole fraction solubilities: 0.3802, 0.4394, and 0.2372 x 2 /10 −5, respectively, versus helium's 0.70797 x 2 /10 −5), [97] and helium's index of refraction is closer to unity than that of any other gas. [98]

  5. Helium storage and conservation - Wikipedia

    en.wikipedia.org/wiki/Helium_storage_and...

    To ensure that the revenue from future sales would amortize the cost, the Secretary of the Interior raised the price of high purity helium from $12 per thousand cubic feet to $35. [1] [4] This price jump was an incentive for private companies to enter the market and sell helium at lower prices. [1] [3] [4] By 1970, it also became evident that ...

  6. A company bought gas rights to this land for $1. Helium ... - AOL

    www.aol.com/news/company-bought-gas-rights-land...

    Fewer than 10 countries in the world produce helium. South Africa will be the latest when Renergen starts commercial production of the critical gas. A company bought gas rights to this land for $1.

  7. Explainer-What is helium and why is it used in rockets? - AOL

    www.aol.com/news/explainer-helium-why-used...

    Helium also has a very low boiling point (-268.9°C or -452°F), allowing it to remain a gas even in super-cold environments, an important feature because many rocket fuels are stored in that ...

  8. Noble gas - Wikipedia

    en.wikipedia.org/wiki/Noble_gas

    Helium has several unique qualities when compared with other elements: its boiling point at 1 atm is lower than those of any other known substance; it is the only element known to exhibit superfluidity; and, it is the only element that cannot be solidified by cooling at atmospheric pressure [29] (an effect explained by quantum mechanics as its ...

  9. The Helium Cliff: Will Government Gridlock Send Prices ... - AOL

    www.aol.com/news/2013-08-03-helium-cliff-soaring...

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