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Very simple. Take a look at ur periodic table and look across the atomic numbers of every element. Hydrogen has an atomic number of 1 because it has one electron (mainly one proton but protons=electrons in atoms) and it increases by one across the ... more
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Peptides from Abbiotec are made using F-moc solid phase method. Automated or manual peptide synthesis is performed where appropriate. ... more
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Chem 15 targets students with a strong high school background in chemistry. Placement tests during freshman week can be a good indicator for placement, but sometimes students don't feel qualified to take the more advanced sequence and those ... more
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The buffer can not be make by disodium phosphate alone ,we have to add some other phosphate compound. For buffer of pH=7 and 20mM concentration the ration of two phosphates will be : Monosodium phosphate, monohydrate = 0.1167% Disodium phosphate, ... more
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When you say chemical interactions of molecules, I am going to assume you mean intermolecular forces, and the truth is that Colligative Properties and Intermolecular Forces are actually related. In essence, the Intermolecular forces (chemical ... more
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Check Central iSchool for a list of course offerings at Central iSchool. ... more
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Electromagnetic radiaion is a term for a spectrum of transverse waves. Their wavelengths determine their properites but they all carry energy in one form or another. Th spectrum is as follows, starting with the shorthest wavelength: Gamma, X-ray, ... more
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If you just want to produce blue flames in a campfire, throwing a little copper (II) chloride (also called cupric chloride) into the coals will do it. Copper oxychloride works too. Plain copper metal generally gives greenish flames, but having a ... more
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Titration is a common laboratory method of quantitative chemical analysis that is used to determine the unknown concentration of a known reactant. Because volume measurements play a key role in titration, it is also known as volumetric analysis. A ... more
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When a fuel reacts with Oxygen in a combustion reaction, a large amount of heat is generally released. (Something like a candle or a match for example, will also release heat in smaller amounts). The 'Release' of Heat Energy is an 'Exothermic' ... more
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