FO

Fo or FO may refer to:

Locations

  • Faroe Islands, ISO 3166-1 country code, FO
  • .fo, the country code top level domain (ccTLD) for Faroe Islands
  • Faroese language (language code fo)
  • Fo Department of the Houet Province of Burkina Faso
  • abbreviation used for the Italian province of Forlì
  • Furka-Oberalp-Bahn, a Swiss railway
  • Science and technology

  • Fan out (FO), number of loads at the output of a Ring oscillator
  • First-order logic, a system of mathematical logic
  • Fourier number (Fo) in physics
  • Fuel factor (Fo), used to check the accuracy of an emission measurement system
  • Fuel oil or also called Furnace Oil
  • FO, a subunit of F1FO type ATPase enzyme
  • Military and aviation

  • Airlines of Tasmania IATA airline designator
  • Field officer, a senior army officer
  • First Officer, or co-pilot on an airliner
  • Flying Officer, a Royal Air Force rank
  • Forward Observer, a soldier who directs artillery fire
  • People

  • Dario Fo, Italian playwright and Nobel laureate
  • Fo Porter, a contestant on America's Next Top Model, Cycle 12
  • or (佛、仏), the Chinese name for Buddha
  • Apúlia e Fão

    Apúlia e Fão is a civil parish in the municipality of Esposende, Portugal. It was formed in 2013 by the merger of the former parishes Apúlia and Fão. The population in 2011 was 7,301, in an area of 16.29 km².

    References


    Dioxygen difluoride

    Dioxygen difluoride is a compound of fluorine and oxygen with the molecular formula O
    2
    F
    2
    . It exists as an orange solid that melts into a red liquid at −163 °C (110 K). It is an extremely strong oxidant and decomposes into oxygen and fluorine even at −160 °C (113 K) at a rate of 4% per day: its lifetime at room temperature is thus extremely short. Dioxygen difluoride reacts with nearly every chemical it encounters – even ordinary ice – leading to its onomatopoeic nickname "FOOF" (a play on its chemical structure).

    The material has no practical applications, but has been of theoretical interest. One laboratory's use of it was the synthesis of plutonium hexafluoride at unprecedentedly low temperatures, which was significant because previous methods for its preparation needed temperatures so high that the plutonium hexafluoride created would rapidly decompose.

    Preparation

    Dioxygen difluoride can be obtained by subjecting a 1:1 mixture of gaseous fluorine and oxygen at low pressure (7–17 mmHg is optimal) to an electric discharge of 25–30 mA at 2.1–2.4 kV. A similar method was used for the first synthesis by Otto Ruff in 1933. Another synthesis involves mixing O
    2
    and F
    2
    in a stainless steel vessel cooled to −196 °C (77.1 K), followed by exposing the elements to 3 MeV bremsstrahlung for several hours. A third method requires heating a mix of fluorine and oxygen to 700 °C (1,292 °F), and then rapidly cooling it using liquid oxygen. All of these methods involve synthesis according to the equation:

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