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  2. Standard molar entropy - Wikipedia

    en.wikipedia.org/wiki/Standard_molar_entropy

    The standard molar entropy of a gas at STP includes contributions from: [2] The heat capacity of one mole of the solid from 0 K to the melting point (including heat absorbed in any changes between different crystal structures). The latent heat of fusion of the solid. The heat capacity of the liquid from the melting point to the boiling point.

  3. Welded wire mesh fence - Wikipedia

    en.wikipedia.org/wiki/Welded_wire_mesh_fence

    Welded wire mesh fence is a steel fence consisting of wire strands electrically welded together to form a high strength mesh. The fencing is available in two formats: rolled mesh and rigid mesh. Over the last 30 years rigid mesh fencing has become the system of choice for demarcation across the UK, Europe and Australia.

  4. Concertina wire - Wikipedia

    en.wikipedia.org/wiki/Concertina_wire

    Triple concertina wire fence Baled concertina wire prior to deployment. Concertina wire or Dannert wire [1] is a type of barbed wire or razor wire that is formed in large coils which can be expanded like a concertina. In conjunction with plain barbed wire (and/or razor wire/tape) and steel pickets, it is most often used to form military-style ...

  5. Molar volume - Wikipedia

    en.wikipedia.org/wiki/Molar_volume

    The ideal gas equation can be rearranged to give an expression for the molar volume of an ideal gas: = = Hence, for a given temperature and pressure, the molar volume is the same for all ideal gases and is based on the gas constant: R = 8.314 462 618 153 24 m 3 ⋅Pa⋅K −1 ⋅mol −1, or about 8.205 736 608 095 96 × 10 −5 m 3 ⋅atm⋅K ...

  6. Amount of substance - Wikipedia

    en.wikipedia.org/wiki/Amount_of_substance

    Historically, the mole was defined as the amount of substance in 12 grams of the carbon-12 isotope.As a consequence, the mass of one mole of a chemical compound, in grams, is numerically equal (for all practical purposes) to the mass of one molecule or formula unit of the compound, in daltons, and the molar mass of an isotope in grams per mole is approximately equal to the mass number ...

  7. Standard temperature and pressure - Wikipedia

    en.wikipedia.org/wiki/Standard_temperature_and...

    For example, IUPAC has, since 1982, defined standard reference conditions as being 0 °C and 100 kPa (1 bar), in contrast to its old standard of 0 °C and 101.325 kPa (1 atm). [2] The new value is the mean atmospheric pressure at an altitude of about 112 metres, which is closer to the worldwide median altitude of human habitation (194 m).

  8. 50 Divisions - Wikipedia

    en.wikipedia.org/wiki/50_Divisions

    50 Divisions refers to the 50 divisions of construction information, as defined by the Construction Specifications Institute (CSI)'s MasterFormat beginning in 2004 ...

  9. Barbed wire - Wikipedia

    en.wikipedia.org/wiki/Barbed_wire

    Barbed wire fence in line brace. The most important and most time-consuming part of a barbed wire fence is constructing the corner post and the bracing assembly. A barbed wire fence is under tremendous tension, often up to half a ton, and so the corner post's sole function is to resist the tension of the fence spans connected to it. The bracing ...

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