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Science (Physics, Chemistry) — Yes — link: CIE 5125 Science (Physics, Biology) — Yes — link: CIE 5126 Science (Chemistry, Biology) — Yes — link: CIE 5129 Combined Science: Yes Yes Yes Cannot be combined with syllabuses 0608, 0610, 0620, 0625, 0652, 0653 & 0654 , 5054, 5070, 5090, 5096 & 5131 (O Level) link: CIE 5130 Additional ...
Description: This book explained Dalton's theory of atoms and its applications to chemistry. Importance: The book was one of the first to describe a modern atomic theory, a theory that lies at the basis of modern chemistry. [3]: 251 It is the first to introduce a table of atomic and molecular weights.
Normality is defined as the number of gram or mole equivalents of solute present in one liter of solution.The SI unit of normality is equivalents per liter (Eq/L). = where N is normality, m sol is the mass of solute in grams, EW sol is the equivalent weight of solute, and V soln is the volume of the entire solution in liters.
PubChem can be accessed for free through a web user interface. Millions of compound structures and descriptive datasets can be freely downloaded via FTP. PubChem contains multiple substance descriptions and small molecules with fewer than 100 atoms and 1,000 bonds. More than 80 database vendors contribute to the growing PubChem database. [2]
A blank solution is a solution containing little to no analyte of interest, [1] usually used to calibrate instruments such as a colorimeter. According to the EPA, the "primary purpose of blanks is to trace sources of artificially introduced contamination." [2] Different types of blanks are used to identify the source of contamination in the ...
[W 106] Additionally, "Wikipedia for Schools", the Wikipedia series of CDs / DVDs produced by Wikipedia and SOS Children, is a free selection from Wikipedia designed for education towards children eight to seventeen. [W 107] There have been efforts to put a select subset of Wikipedia's articles into printed book form. [246]
Solution may refer to: Solution (chemistry), a mixture where one substance is dissolved in another; Solution (equation), in mathematics Numerical solution, in ...
water or an aqueous solution and is termed water/oil (w/o) if the dispersed phase is water or an aqueous solution and the continuous phase is an organic liquid (an "oil"). Note 5: A w/o emulsion is sometimes called an inverse emulsion. The term "inverse emulsion" is misleading, suggesting incorrectly that