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Congratulations! You have signed up for AP Chemistry for this year
Congratulations! You have signed up for AP Chemistry for this year

... AP stands for “Advanced Placement” and AP Chemistry is the equivalent of a college chemistry class. There are some chemistry principles that are important that you remember from Pre-AP Chemistry, so I have compiled some practice notes and assignments that will equip you for the beginning of the year ...
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... Percent Composition is defined as the percent by mass of each different element present in a compound. These are the steps to follow in order to calculate it. 1. Calculate the total mass of each element present in the formula of the compound. 2. Calculate the molecular weight of the compound. 3. Div ...
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Solutes

... Significant Figure Rule – The number of places to the right of the decimal for a log must be equal to the number of significant figures in the original number. ...
Chapter 12
Chapter 12

... We divide the subscripts by 0.25 (the smallest subscript) The empirical formula will be C2H6O To calculate the actual, molecular formula we must know the approximate molar mass of the compound in addition to its empirical formula. Example: 3.11. ...
triose phosphate
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Chapter 12
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... We divide the subscripts by 0.25 (the smallest subscript) The empirical formula will be C2H6O To calculate the actual, molecular formula we must know the approximate molar mass of the compound in addition to its empirical formula. Example: 3.11. ...
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... need twelve (12) basic building blocks or metabolic substrates. In the next few modules we will learn where these metabolic substrates come from and how cells synthesize them. The second purpose is the generation ...
The Logical Structure of Organic Chemistry and the Empirical
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Mole and Energy - Deans Community High School

... Thermochemistry is the study of heat energy taken in or given out in chemical reactions. This heat, absorbed or released, can be related to the internal energy of the substances involved. Such internal energy is called ENTHALPY, symbol H. As it is only possible to measure the change in enthalpy, the ...
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... you follow the steps you can get to the answer. Think about the “steps” I mentioned when we talked about problem solving. When we learned how to write the names of compounds for their formulas, and the formulas for the names. When we do conversions and stoichiometry. I am half cliche when I describe ...
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... Electrophoresis, operationally defined as the migration of analytes within an electrolyte solution under the influence of an electrical field, was first described by Tiselius in the 1930s [1]. Since its introduction, electrophoresis has become a primary tool of biochemical separation and has spawned ...
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5. Formulae, equations and amounts of substance

... Distilled water can be added to the conical flask during a titration to wash the sides of the flask so that all the acid on the side is washed into the reaction mixture to react with the alkali. It does not affect the titration reading as water does not react with the reagents or change the number o ...
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... Thermochemistry is the study of heat energy taken in or given out in chemical reactions. This heat, absorbed or released, can be related to the internal energy of the substances involved. Such internal energy is called ENTHALPY, symbol H. As it is only possible to measure the change in enthalpy, the ...
Theories of the constitution of gases in the early nineteenth century
Theories of the constitution of gases in the early nineteenth century

... heat and heat content (in an archaic sense defined later on) and to his belief that gas particles were more or less stationary. All these influences will be considered in detail in the next chapters. Chemists showed a utilitarian attitude towards hypotheses and their scepticism seems to have been r ...
5. Formulae, equations and amounts of substance
5. Formulae, equations and amounts of substance

... Distilled water can be added to the conical flask during a titration to wash the sides of the flask so that all the acid on the side is washed into the reaction mixture to react with the alkali. It does not affect the titration reading as water does not react with the reagents or change the number o ...
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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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