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However s varies similarly; for example if in the sample 15 N is 0.385% and 14 N is 99.615%, s is 0.003850 in the former case and 0.00385/0.99615 = 0.003865 in the latter. The value of 1000 ⋅ s − a a {\displaystyle 1000\cdot {\frac {s-a}{a}}} is then 51.05‰ in the former case and 51.38‰ in the latter, an insignificant difference in ...
Depending on the formula and the symmetry of the structure, there might be several isotopomers of one isotopologue. For example, ethanol has the molecular formula C 2 H 6 O. Mono-deuterated ethanol, C 2 H 5 DO or C 2 H 5 2 HO, is an isotopologue of it. The structural formulas CH 3 −CH 2 −O−D and CH 2 D−CH 2 −O−H are two isotopomers ...
Hantu Air, Puaka Air or Mambang Air is the Malay translation for Spirit of the Water or Water Ghost, which according to animist traditions in Maritime Southeast Asia, is the unseen inhabitant of watery places such as rivers, lakes, seas, swamps and even ditches. [1]
Clarke number or clarke is the relative abundance of a chemical element, typically in Earth's crust. The technical definition of "Earth's crust" varies among authors, and the actual numbers also vary significantly.
Most water in Earth's atmosphere and crust comes from saline seawater, while fresh water accounts for nearly 1% of the total. The vast bulk of the water on Earth is saline or salt water, with an average salinity of 35‰ (or 3.5%, roughly equivalent to 34 grams of salts in 1 kg of seawater), though this varies slightly according to the amount of runoff received from surrounding land.
Water samples made up of different isotopes of hydrogen and oxygen have slightly different physical properties. As an extreme example, heavy water, which contains two deuterium (2 H) atoms instead of the usual, lighter hydrogen-1 (1 H), has a melting point of 3.82 °C (38.88 °F) and boiling point of 101.4 °C (214.5 °F). [1]
A federal judge said Kraft Heinz must face a proposed nationwide class action alleging that it defrauded consumers by claiming its Kraft macaroni and cheese, one of its best-known products ...
The Arden Buck equations are a group of empirical correlations that relate the saturation vapor pressure to temperature for moist air.The curve fits have been optimized for more accuracy than the Goff–Gratch equation in the range −80 to 50 °C (−112 to 122 °F).