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  2. Ammonia - Wikipedia

    en.wikipedia.org/wiki/Ammonia

    Ammonia is used in numerous different industrial applications requiring carbon or stainless steel storage vessels. Ammonia with at least 0.2% by weight water content is not corrosive to carbon steel. NH 3 carbon steel construction storage tanks with 0.2% by weight or more of water could last more than 50 years in service. [141]

  3. Nominal Pipe Size - Wikipedia

    en.wikipedia.org/wiki/Nominal_Pipe_Size

    Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. [1] " Nominal" refers to pipe in non-specific terms and identifies the diameter of the hole with a non-dimensional number (for example – 2-inch nominal steel pipe" consists of many varieties of steel pipe with the only criterion being a 2.375-inch (60.3 mm) outside ...

  4. Perfluorononanoic acid - Wikipedia

    en.wikipedia.org/wiki/Perfluorononanoic_acid

    Fluorosurfactants reduce the surface tension of water down to half of what hydrocarbon surfactants can by concentrating at the liquid-air interface due to the lipophobicity of fluorocarbons. [ 10 ] [ 11 ] PFNA is very stable and is not known to degrade in the environment by oxidative processes because of the strength of the carbon–fluorine ...

  5. List of thermal conductivities - Wikipedia

    en.wikipedia.org/wiki/List_of_thermal_conductivities

    This material which must have started out like unfired pottery was slip cast from fused silica. Then it was dried four days at 333 K before being tested. It was 9 inches in diameter and 1 inch thick, density 1.78 ⋅ cm −3. The first run went to 1317K and then on the second run the same insulator proved to be more conductive. 1959. [110 ...

  6. Sodium phenoxide - Wikipedia

    en.wikipedia.org/wiki/Sodium_phenoxide

    Sodium phenoxide is a moderately strong base. Acidification gives phenol: [5] PhOH ⇌ PhO − + H + (K = 10 −10). The acid-base behavior is complicated by homoassociation, reflecting the association of phenol and phenoxide.

  7. Mumbai - Wikipedia

    en.wikipedia.org/wiki/Mumbai

    The Tansa lake supplies water to the western suburbs and parts of the island city along the Western Railway. [316] The water is filtered at Bhandup, [316] which is Asia's largest water filtration plant. [317] [318] [319] India's first underground water tunnel was completed in Mumbai to supply water to the Bhandup filtration plant. [320] [321]

  8. Optical properties of water and ice - Wikipedia

    en.wikipedia.org/wiki/Optical_properties_of...

    The refractive index of water at 20 °C for visible light is 1.33. [1] The refractive index of normal ice is 1.31 (from List of refractive indices).In general, an index of refraction is a complex number with real and imaginary parts, where the latter indicates the strength of absorption loss at a particular wavelength.

  9. Fracking - Wikipedia

    en.wikipedia.org/wiki/Fracking

    The most commonly used proppant is silica sand, though proppants of uniform size and shape, such as a ceramic proppant, are believed to be more effective. [81] USGS map of water use from hydraulic fracturing between 2011 and 2014. One cubic meter of water is 264.172 gallons. [82] [83]

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