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s - Cloudfront.net
s - Cloudfront.net

... Atoms are so small, it is difficult to discuss how much they weigh in grams. Use atomic mass units. an atomic mass unit (amu) is one twelth the mass of a carbon-12 atom. This gives us a basis for comparison. The decimal numbers on the table are atomic masses in amu. ...
Final Exam Review Sheets
Final Exam Review Sheets

... b. surface area: an increase in surface area means more reactant molecules are exposed to collisions which increases the number of successful collisions, increasing the rate of reaction. c. stirring: means there is an increase in the probability that reactants will collide successfully more frequent ...
Chapter 5 - Organic Chemistry, Biochemistry
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... Disulfide bonds are covalent bonds between sulfur atoms in the R groups of two different amino acids. These bonds are very important in maintaining the tertiary structure of some proteins. The shape of a protein is typically described as being globular or fibrous. Globular proteins contain both coil ...
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... but does not show how the atoms are bonded to each other? a) empirical formula ...
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... You react chemical A with chemical B to make a single product. It takes 100 g of A to react completely with 20 g of B What is the mass of the product? a) less than 10 g b) between 100 and 120 g c) exactly 120 g d) over 120 g What is true about the Chemical Properties of the product? a) the propertie ...
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pGLO Transformation and Green Fluorescent Protein - Bio-Rad
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Liquid chromatography: a tool for the analysis of metal species
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... (iv) multidimensional and multimode chromatography. Multidimensional and multimode chromatography involve, respectively: (i) the use of two different mechanisms (e.g. ion-exchange coupled with ionexclusion); (ii) the use of two or more columns, switching the total flux or a portion of eluate from on ...
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... Which substance is least soluble at 10C? Which two substances have the same solubility at 72C? 80 grams of KBr placed in 60C creates a (saturated/unsaturated/supersaturated) solution. When Be(NO3)2 (aq) and NaOH (aq) are mixed together, the resulting precipitate is: Placing a solute in a solvent ...
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Microsoft Word
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... interacting with and inactivating the ribosomes. Such toxins are in general, of plant origin and differ from bacterial toxins that inhibit protein synthesis by mechanisms other than ribosome inactivation. After the toxins had been in the centre of interest in biomedical research for a couple of deca ...
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... (2) Use 4 capillary tubes, absorb one drop of determination solution、0.1% glutamate solution、control solution、0.1% alanine solution respectively. Dot the solution at the corresponding points of the lines. Pay attention to the diameter of the spot less than 0.3 cm. While the spot is dried, dot the s ...
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... gel. The upper gel is the stacking gel having big pore size, its pH is 6.8 and it has no sieving effect for the sample molecules. The larger part is the separating gel or other name is running gel which pore size is smaller, its sieving effect will determine the speed of the migration. Its pH is 8.8 ...
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Size-exclusion chromatography



Size-exclusion chromatography (SEC) is a chromatographic method in which molecules in solution are separated by their size, and in some cases molecular weight. It is usually applied to large molecules or macromolecular complexes such as proteins and industrial polymers. Typically, when an aqueous solution is used to transport the sample through the column, the technique is known as gel-filtration chromatography, versus the name gel permeation chromatography, which is used when an organic solvent is used as a mobile phase. SEC is a widely used polymer characterization method because of its ability to provide good molar mass distribution (Mw) results for polymers.
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