Chemistry

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Plasmas Plasmas exist in a wide range of settings and varieties. Most stars are made up of plasma. The Aurora Borealis is a plasma light show in our upper atmosphere caused by the bombardment from space of the solar wind - another kind of plasma. Lightning bolts are visible plasma trails left by the passage of the electric current that formed it. As stated in the definition, plasma is a gaseous type of state where the matter making the plasma consists of electrically neutral and charged particles. Overall, plasma is electrically neutral having as many positive ions as free electrons distributed through it. Plasmas

Chemistry Virtual Textbook

a reference text for General Chemistry Stephen Lower Simon Fraser University Chemistry Virtual Textbook
MSDS ARCHIVE FOR THE CNTECH LABORATORIES MSDS ARCHIVE FOR THE CNTECH LABORATORIES MSDS (Material Safety Data Sheets) at CNTech Etchants, adhesives, plating baths, etc. Safety Information All chemicals at CNTech can be idenrified by their CAS (Chemical Abstract Service) Registry Number. This is a unique identifier that tells you, for example, that acetone and dimethyl ketone are actually the same substance. From a safety and inventory perspective, this is a terrific idea.
Material Safety Data Sheet Salicylic acid MSDS Name: Salicylic acid Catalog Numbers: AC147700010, AC419220020, AC419220025, AC419225000, S78056, S780561, S93345, A275-12, A275-212, A275-500, A275250LB, A277-500 Synonyms: o-Hydroxybenzoic acid; 2-Hydroxybenzoic acid. unnamed pearl untitled
Welcome to ChemWeb Welcome to the ChemWeb Chemistry Portal NEW CHEMWEB MEMBER BENEFIT: Publishers Select - Free Selected Full Text Articles ChemWeb members now have access to selected full-text articles from Chemistry publishers, including Wiley, Elsevier, Springer, and recently added, Bentham Science and Taylor & Francis. Members can download a selection of articles covering a broad range of topics direct from the pages of some of the most respected journals in Chemistry. Explore some of the latest research or highly cited articles. If you are not a ChemWeb member, take just a minute to register for your free membership now. Welcome to ChemWeb
NMR Knowledge Base - The NMR Resource Ezines A team of Chinese scientists has identified several proteins in spermatozoa which are linked with unexplained male infertility in research that could lead to ways of identifying viable sperm. The volatile compounds emitted by coffee beans in an industrial roaster can be used to predict the degree of roasting, while those emitted from individually roasted beans can be used to distinguish between different coffee species. In this final column in the current series, Waters Corporation's Chris Stumpf discusses the data management challenges within a modern lab. View All Ezines Education NMR Knowledge Base - The NMR Resource
An Interactive Educational Exercise Because of special formatting tags needed to display exponents, this site is best viewed with Netscape 3.0 or higher. If needed, use the link under Useful Materials to download Netscape UNC Chemistry Fundamentals

UNC Chemistry Fundamentals

Online chemical modeling environment (OCHEM): web platform for data storage, model development and publishing of chemical information To create a new QSAR model in OCHEM the user must prepare the training and (optional) validation sets, configure the preprocessing of molecules (standardization and 3D optimization), choose and configure the molecular descriptors and the machine learning method, select the validation protocol (N-fold cross-validation or bagging) and, when the model has been calculated, review the predictive statistics and save or discard the model. The following sections describe each of the aforementioned steps in detail. Training and validation sets, machine learning method and validation Training and validation datasets. One of the most important steps in model development is the preparation of input data, i.e., a training set that contains experimentally measured values of the predicted property. Online chemical modeling environment (OCHEM): web platform for data storage, model development and publishing of chemical information

Conductive Polymers

Conductive Polymers Lists of Nobel Prizes and Laureates Conductive Polymers Play the Conductive Valley Game
Bond Energy If we pass a direct electric current through water containing enough ions to make it a good electrical conductor, it will break down into its constituents: hydrogen and oxygen. Both hydrogen and oxygen gas exist as diatomic molecules so the equation for this chemical reaction is The prefixes tell us that it takes 2 molecules of water to produce one molecule of oxygen and two molecules of hydrogen. If we decompose 36 grams of water (2 moles), we produce 2 moles of hydrogen gas (4 g) and one mole of oxygen gas (32 g). In this reaction, covalent bonds between the hydrogen atoms and oxygen atom in water have been broken and new bonds — between the hydrogen atoms in H2 and the oxygen atoms in O2 — have been formed. This reaction requires the input of energy (electrical in this case). Bond Energy
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