Xem 1-16 trên 16 kết quả Molecular formula
  • Isomers: Compounds with the same molecular formula but different structural formulas. Different compounds that have the same molecular formula – but differ in their connectivity. Isomers that differ in the way their atoms are arranged in space

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  • This book focuses on the Fourier transform applications in the analysis of some types of materials. The field of Fourier transform has seen explosive growth during the past decades, as phenomenal advances both in research and application have been made. During the preparation of this book, we found that almost all the textbooks on materials analysis have a section devoted to the Fourier transform theory. Most of those describe some formulas and algorithms, but one can easily be lost in seemingly incomprehensible mathematics.

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  • The technique now known as MS has its roots in atomic physics at the beginning of the twentieth century, when it was originally applied by physicists toward answering questions on the nature of atoms. Throughout much of the 1800s, the prevailing wisdom held that atoms were indivisible, that all atoms of a given element had the same mass, and that the masses of all elements were multiples of the mass of hydrogen [7–9].

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  • Considering that, when mothers do not breast-feed, or only do so partially, there is a legitimate market for infant formula and for suitable ingredients from which to prepare it; that all these products should accordingly be made accessible to those who need them through commercial or non-commercial distribution systems; and that they should not be marketed or distributed in ways that may interfere with the protection and promotion of breast-feeding; Recognizing further that inappropriate feeding practices lead to infant malnutrition, morbidity and mortality in all countries, and tha...

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  • Chapter 7 - Structure and synthesis of Alkenes. The goal in this chapter: Draw and name alkenes and cycloalkenes; given a molecular formula, calculate the number of double bonds and rings; explain how the stability of alkenes depends on their structures; show how alkenes can be synthesized by eliminations from alkyl halides and alcohols.

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  • The Project Gutenberg EBook of The Handbook of Soap Manufacture, by W. H. Simmons and H. A. Appleton This eBook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. You may copy it, give it away or re-use it under the terms of the Project Gutenberg License included with this eBook or online at www.gutenberg.net Title: The Handbook of Soap Manufacture Author: W. H. Simmons H. A. Appleton Release Date: June 7, 2007

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  • The Project Gutenberg EBook of An Elementary Study of Chemistry, by William McPherson and William Edwards Henderson This eBook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. You may copy it, give it away or re-use it under the terms of the Project Gutenberg License included with this eBook or online at www.gutenberg.org Title: An Elementary Study of Chemistry Author: William McPherson William Edwards Henderson Release Date: March 18, 2007

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  • Chemical substances (also called pure substances) may well be defined as "any material with a definite chemical composition" in an introductory general chemistry textbook.[2] According to this definition a chemical substance can either be a pure chemical element or a pure chemical compound. But, there are exceptions to this definition; a pure substance can also be defined as a form of matter that has both definite composition and distinct properties.[3] The chemical substance index published by CAS also includes several alloys of uncertain composition.

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  • Project Gutenberg's Conversations on Chemistry, V. 1-2, by Jane Marcet This eBook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. You may copy it, give it away or re-use it under the terms of the Project Gutenberg License included with this eBook or online at www.gutenberg.org Title: Conversations on Chemistry, V. 1-2 In Which the Elements of that Science Are Familiarly Explained and Illustrated by Experiments Author: Jane Marcet Release Date: October 13, 2008...

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  • The Project Gutenberg EBook of A Handbook of Laboratory Glass-Blowing, by Bernard D. Bolas This eBook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. You may copy it, give it away or re-use it under the terms of the Project Gutenberg License included with this eBook or online at www.gutenberg.net Title: A Handbook of Laboratory GlassBlowing Author: Bernard D. Bolas Illustrator: Naomi Bolas Release Date: June 24, 2010

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  • Project Gutenberg's The Chemistry of Hat Manufacturing, by Watson Smith This eBook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. You may copy it, give it away or re-use it under the terms of the Project Gutenberg License included with this eBook or online at www.gutenberg.org Title: The Chemistry of Hat Manufacturing Lectures Delivered Before the Hat Manufacturers' Association Author: Watson Smith Editor: Albert Shonk Release Date: February 10, 2006

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  • Tham khảo sách 'project gutenberg's on the antiquity of the chemical art, by james mactear', khoa học tự nhiên, hoá học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Chemists frequently refer to chemical compounds using chemical formulae or molecular structure of the compound. There has been a phenomenal growth in the number of chemical compounds being synthesized (or isolated), and then reported in the scientific literature by professional chemists around the world.[13] An enormous number of chemical compounds are possible through the chemical combination of the known chemical elements. As of May 2011, about sixty million chemical compounds are known.

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  • Tham khảo sách 'a textbook of assaying: for the use of those connected with mines', khoa học tự nhiên, hoá học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • The Project Gutenberg EBook of Experiments upon magnesia alba, Quicklime, and some other Alcaline Substances, by Joseph Black This eBook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. You may copy it, give it away or re-use it under the terms of the Project Gutenberg License included with this eBook or online at www.gutenberg.net Title: Experiments upon magnesia alba, Quicklime, and some other Alcaline Substances Author: Joseph Black Release Date: February 13, 2008 ...

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  • Outside of Chicago’s City Hall is a giant Picasso sculpture of a weeping woman. For the more artistically challenged, it takes quite a while before you can “see” it, before you can really make out what Picasso was getting at and how he got there. Five miles to the south of City Hall, in the basement of the University of Chicago’s Chemistry Department, lies a piece of glassware of which the great artist would have been proud. Again to the uninitiated, it takes quite a while to “see” it. It looks like a deranged spider; indeed, those who work with it call it the Tarantula.

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