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Mole Day originated from a celebration by educator Margaret Christoph. [5] She wrote an article about her experiences in The Science Teacher in the 1980s. [6] Inspired by this article, Maurice Oehler, a high school chemistry teacher from Prairie du Chien, Wisconsin, founded the National Mole Day Foundation (NMDF) on May 15, 1991.
A mole at Bastia in Corsica. A mole is a massive structure, usually of stone, used as a pier, breakwater, or a causeway separating two bodies of water. A mole may have a wooden structure built on top of it that resembles a wooden pier. The defining feature of a mole, however, is that water cannot freely flow underneath it, unlike a true pier.
The narrator discusses the phenomenon of a giant mole in a far village, and the attempt of the village schoolmaster to bring its existence to the public attention, only to become an object of derision to the scientific community. Without knowing the schoolmaster, the narrator tries to defend him and his honesty in a paper about the giant mole.
In chemistry, a mole map is a graphical representation of an algorithm that compares molar mass, number of particles per mole, and factors from balanced equations or other formulae. [1] They are often used in undergraduate -level chemistry courses as a tool to teach the basics of stoichiometry and unit conversion .
National Chemistry Day, first celebrated in 1987 by members of the American Chemical Society (ACS), educators and other individual volunteers, was a vision of the former ACS President Dr. George C. Pimentel. [1] His goal was for ACS to hold a simultaneous event nationwide to impress on the public the importance of chemistry in everyday life.
The number of atoms in a mole, a quantity known as the Avogadro constant, is experimentally determined, and the current best estimate of its value is 6.022 140 76 × 10 23 entities per mole. [18] This new definition of the kilogram proposed to fix the Avogadro constant at precisely 6.022 14 X × 10 23 mol −1 with the kilogram being defined as ...
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Franconia Day or Tag der Franken ("Day of the Franconians") was created in 2006 following a decision by the Bavarian Landtag and has been celebrated annually since then on 2 July or on the weekend immediately following. It is intended to highlight the diverse landscape and history of the Franconian region and to raise awareness of Franconia's ...