The Fight for Food Purity Economic Botany September 29‚ 2013 Michael Pollan’s film‚ The Botany of Desire‚ opened my eyes to the complicated relationship between people and plants. Pollan opened up with the following statement: “Flowers. Trees. Plants. We ’ve always thought that we controlled them. But what if‚ in fact‚ they have been shaping us?” (Pollan‚ PBS) I paused the film and took a few minutes to let this soak in. I was always under the impression that we
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2.0 Kinematics of Linear motion is defined as the studies of motion of an objects without considering the effects that produce the motion. There are two types of motion: Linear or straight line motion (1-D) with constant (uniform) velocity with constant (uniform) acceleration‚ e.g. free fall motion Projectile motion (2-D) x-component (horizontal) y-component (vertical) 2 Learning Outcome: 2.1 Linear Motion (2 hour) www.kmph.matrik.edu.my At the end of this chapter
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contribution to water hardness‚ by convention hardness is reported as mg 〖CaCo〗_3/L of solution. Water with a hardness value less than 60 ppm is considered “soft” water‚ while water ≥ 200 ppm 〖CaCo〗_3/L is labeled as “hard”. How: Ethylenediamminetetraacetic Acid (EDTA) is a complex versatile chelating agent. A chelating agent is a substance whose atoms can form several bonds (ligands) to a single metal ion. Chelating agents are multi-dentate ligands. Multidentate ligands are many clawed‚ holding onto the metal
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of acetylsalicylic acid Results and Data treatment (A) Preparation of aspirin i) Details about the reactants Reaction of the acetylation of salicylic acid is following From the balanced reaction above‚ it can be seen that the stoichiometry between salicylic acid and acetic anhydride is 1: 1. In this experiment‚ 21.7mmol of salicylic acid was used to react 6.0mL of acetic anhydride and salicylic acid was limiting reagent. The expected amount of salicylic acid used: 21.7/1000*138
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Abstract In this experiment‚ the Ksp for calcium sulfate dihydrate‚ CaSO4·2H2O‚ by titrating 4 times a calcium sulfate dihydrate solution with diprotic EDTA‚ H2(EDTA)2-. For each trial we found the Ksp by means of molarities and activities. The results for the Ksp using only molarities was very different than the Ksp using activities. The average Ksp using molarity only was 2.26 x 10-4 and the average Ksp using activity turned out to be 2.31 x 10-5. The actual Ksp however‚ is 3.14 x 10-5. A percent
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soil property. These two tests are the falling head permeability test and the constant head permeability test. Which test is used depends upon the type of soil to be tested. For soils of high permeability (sands and gravels) a constant head test is used. For soils of intermediate to low permeability‚ a falling head test is used. As we were testing sand we used a constant head permeability test. By carrying out the constant head permeability test we can determine the coefficients of permeability of
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Terrence Smith Advanced College Writing Dr. Ruby Parker Argument Synthesis April 21‚ 2011 Argument Synthesis In Mr. Siemiesz’s chapter he explained about the National Security Consequences of U.S Oil Dependence and how it could be fixed and changed for the best interest of the country; Mr. Siemiesz outlined specific points or steps the country could take to make those changes he outlined in the chapter. “Those major energy suppliers from Russia to Iraq to Venezuela have been increasingly
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CHEMICAL REACTIONS: ACID-BASE BUFFERS Short Overview Acids and bases represent two of the most common classes of compounds. Many studies have been done on these compounds‚ and their reactions are very important. Perhaps the most important reaction is the one in which an acid and base are combined‚ resulting in the formation of water (in aqueous solution) and a salt; this reaction is called neutralization. A buffer solution is a solution that contains both an acid and a salt containing
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Synthesis of Chloroform -------------------------------------------------------------------------------- With Calcium Hypochlorite and Acetone When chlorine is passed into boiling alcohol‚ both chlorination of the methyl group and oxidation of the primary alcohol group to an aldehyde occur‚ giving trichloro-acetaldehyde or chloral: When chloral is treated with caustic alkali‚ fission of the C-C linkage occurs‚ giving chloroform and a formate. Acetaldehyde and also many ketones‚ such as acetone
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GRAVIMETRIC DETERMINATION OF SULFATE Purpose You will be given a solid powder‚ which has been dried to constant mass. The sample is water soluble. The purpose of this experiment is to determine the concentration of sulfate in your solid sample using gravimetric analysis. Background Gravimetric Analysis The goal of most quantitative chemical analysis measurements is to estimate the relative abundance of an analyte in a chemical sample. For solid and liquid samples‚ a very common expression
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