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  2. Argon - Wikipedia

    en.wikipedia.org/wiki/Argon

    Argon is a chemical element; it has symbol Ar and atomic number 18. It is in group 18 of the periodic table and is a noble gas. [10] Argon is the third most abundant gas in Earth's atmosphere, at 0.934% (9340 ppmv).

  3. Energy factor - Wikipedia

    en.wikipedia.org/wiki/Energy_factor

    The energy factor metric only applies to residential water heaters, which are currently defined by fuel, type, and input capacity. [5] Generally, the EF number represents the thermal efficiency of the water heater as a percentage, since it is an average of the ratio of the theoretical heat required to raise the temperature of water drawn to the amount of energy actually consumed by the water ...

  4. Electric water boiler - Wikipedia

    en.wikipedia.org/wiki/Electric_water_boiler

    Japanese Zojirushi brand "Thermo Pot" electric kettle hot water dispenser Wall mounted, unpressurized electric boiler with 5 liters maximum capacity. An electric water boiler, also called a thermo pot or tea urn [1] in British English, is a consumer electronics small appliance used for boiling water [2] [3] and maintaining it at a constant temperature in an enclosed reservoir.

  5. Argonium - Wikipedia

    en.wikipedia.org/wiki/Argonium

    Argonium (also called the argon hydride cation, the hydridoargon(1+) ion, or protonated argon; chemical formula ArH +) is a cation combining a proton and an argon atom. It can be made in an electric discharge , and was the first noble gas molecular ion to be found in interstellar space.

  6. Table of specific heat capacities - Wikipedia

    en.wikipedia.org/wiki/Table_of_specific_heat...

    A Assuming an altitude of 194 metres above mean sea level (the worldwide median altitude of human habitation), an indoor temperature of 23 °C, a dewpoint of 9 °C (40.85% relative humidity), and 760 mmHg sea level–corrected barometric pressure (molar water vapor content = 1.16%).

  7. Argon compounds - Wikipedia

    en.wikipedia.org/wiki/Argon_compounds

    Ar-NCCN argon–cyanogen van der Waals complex centre of molecule 3.58 90° T shape 30 cm −1: 0.0979 [63] DCCDAr argon-deuterated acetylene centre of molecule 3.25 90° T shape 0.0008 mdyn/Å / 8.7 cm −1 [63] SO 3 Ar sulfur trioxide argon S 3.350 on axis 90° from SO bond 0.059 mdyn/Å / 61 cm −1 [80] Ar•HCCH acetylene argon T shape [81 ...

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