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  2. Hydrogen - Wikipedia

    en.wikipedia.org/wiki/Hydrogen

    Hydrogen is a chemical element; it has symbol H and atomic number 1. It is the lightest element and, at standard conditions, is a gas of diatomic molecules with the formula H 2, sometimes called dihydrogen, [11] hydrogen gas, molecular hydrogen, or simply hydrogen. It is colorless, odorless, [12] non-toxic, and highly combustible.

  3. Hydrogen atom - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_atom

    Depiction of a hydrogen atom showing the diameter as about twice the Bohr model radius. (Image not to scale) A hydrogen atom is an atom of the chemical element hydrogen.The electrically neutral hydrogen atom contains a single positively charged proton in the nucleus, and a single negatively charged electron bound to the nucleus by the Coulomb force.

  4. Hydrogen internal combustion engine vehicle - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_internal...

    Using hydrogen's lower heating value, the maximum fuel cell efficiency would be 94.5%. [33] The efficiency of a hydrogen combustion engine can be similar to that of a traditional combustion engine. If well optimized, slightly higher efficiencies can be achieved. The comparison with a hydrogen fuel cell is interesting.

  5. 50 Interesting And Intriguing Facts From The “Today I Learned” Community. Shelly Fourer. November 25, 2024 at 1:36 AM. Nowadays, ...

  6. 50 Random And Interesting Facts You Might Not Know ... - AOL

    www.aol.com/80-random-interesting-facts-might...

    BSc meteorologist Janice Davila tells Bored Panda that one of the most unknown facts from her field of expertise is that weather radars are slightly tilted upward in a half-degree (1/2°) angle.

  7. 30 Fun, Interesting, And Strange Facts You Might Not Have ...

    www.aol.com/lifestyle/86-random-fascinating...

    Image credits: Oliver James #2. Did you know, those little bees you see in the evening sitting on flowers are old bees. Old & sick bees don't return to the hive at the end of their day.

  8. Liquid hydrogen - Wikipedia

    en.wikipedia.org/wiki/Liquid_hydrogen

    Liquid hydrogen (H 2 (l)) is the liquid state of the element hydrogen. Hydrogen is found naturally in the molecular H 2 form. [4] To exist as a liquid, H 2 must be cooled below its critical point of 33 K. However, for it to be in a fully liquid state at atmospheric pressure, H 2 needs to be cooled to 20.28 K (−252.87 °C; −423.17 °F). [5]

  9. “Today I Learned”: 30 Interesting And Weird Facts To Satisfy ...

    www.aol.com/lifestyle/97-interesting-intriguing...

    That's why we've gathered another collection of the most interesting and weird fun facts from the TIL community on Reddit. So, sink your curious teeth into these little nuggets of information that ...

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