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Therefore, pH values on the different scales cannot be compared directly because of differences in the solvated proton ions, such as lyonium ions, which require an insolvent scale that involves the transfer activity coefficient of hydronium/lyonium ion. pH is an example of an acidity function, but others can be defined.
For example, Pb is the symbol for lead ... Ph: Phosphorus: 15: Current symbol is P. [nb 1] Pl: ... Alchemists would typically call the metals by their planetary names ...
Usually, a "phenyl group" is synonymous with C 6 H 5 − and is represented by the symbol Ph (archaically, Φ), or Ø. Benzene is sometimes denoted as PhH. Phenyl groups are generally attached to other atoms or groups. For example, triphenylmethane (Ph 3 CH) has three phenyl groups attached to the same carbon center. Many or even most phenyl ...
For example, a synthetically prepared amorphous aluminosilicate (Al 2 O 3-SiO 2) was initially measured as having IEP of 4.5 (the electrokinetic behavior of the surface was dominated by surface Si-OH species, thus explaining the relatively low IEP value). [26] Significantly higher IEP values (pH 6 to 8) have been reported for 3Al 2 O 3-2SiO 2 ...
1944 Philippines five-centavo coin of the Commonwealth period. When the Philippines became a U.S. Commonwealth in 1935, the coat of arms of the Philippine Commonwealth was adopted and replaced the arms of the U.S. Territories on the reverse of coins while the obverse remained unchanged. This seal is composed of a much smaller eagle with its ...
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The list given in ISO 31-8:1992 was quoted from the 1998 IUPAC "Green Book" Quantities, Units and Symbols in Physical Chemistry and adds in some cases in parentheses the Latin name for information, where the standard symbol has no relation to the English name of the element. Since the 1992 edition of the standard was published, some elements ...
The second is a link to the article that details that symbol, using its Unicode standard name or common alias. (Holding the mouse pointer on the hyperlink will pop up a summary of the symbol's function.); The third gives symbols listed elsewhere in the table that are similar to it in meaning or appearance, or that may be confused with it;