Reactants Predictions Before Combining Observations After Combinin g Starch + I2 No reaction‚ starch will remain white Reaction; black deposits on the glass tube. Starch turns black Food coloring + NaOCl No reaction; will turn lighter Reaction; the solution that was dark blue turned into light blue Food coloring + CH3COOH No reaction; color will turn lighter No reaction; when both combined‚ the color (dark blue) remained the same Food coloring + NaOCl + CH3COOH No reaction; solution will remain
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Clostridium Difficile Anna Kay Mew BIOL 210 Summer 2013 Frank D Boone June 11‚ 2013 Clostridium Difficile The healthcare professional can expect to encounter various conditions within their scope of experience. Clostridium difficile represents one of the most common and challenging nosocomial infections that can cause life-threatening complications such as hypervolemia‚ sepsis‚ pain‚ and peritonitis (Grossman and Mager 155). The recognition‚ diagnosis‚ treatment and inhibition
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Introduction: A chemical reaction is formed of reactants and products. Reactants react with each other to give one or more product. Sometimes we can visualize observations that are characteristic of the reaction. Like for example a release of a gas (bubbles are formed) or a change of color or also the formation of a precipitate. Materiel needed: Test tubes Rack of test tubes Plastic droppers Beakers Procedure: We prepare 7 beakers of 7 different solutions (that we mark from 1→ 7)
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Safety in a microbiology laboratory is important in the prevention of infection that might be caused by the microorganisms being studied. This laboratory does not require the use of virulent human pathogens. However‚ many types of microorganisms are potentially pathogenic. This means that‚ although they would not cause disease in a normal healthy host‚ they might possibly do so if a large enough quantity of the microbes came into contact with a compromised host‚ such as by wounds and cuts. In
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Title: Finding the Ratio of Mole of Reactants in a Chemical Reaction Purpose of Lab: To find the coefficients of two chemical reactants that appears in a balanced chemical equation using the continuous variations method. Pre Lab Questions: 1. 2AgNO3(aq) + K2CrO4(aq) → 2KNO3(aq) + Ag2CrO4(s) 2. There is enough to make a valid conclusion because‚ on the graph‚ one can clearly see that the two lines intersect. Thus‚ one can also determine the mole ratio. The mole ratio is approximately
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How can we speed up the reaction between Calcium Carbonate and Hydrochloric Acid? Contents 1. Plan  Aim  Equipment  Variable Factors  Prediction  Method  Trial Run 2. Results  Results Tables 3. Analysis and Conclusions  Graphs  Conclusions 4. Evaluation  Accuracy Of Results  Reliability  Improvements  Extending the Investigation 1. Plan Aim I am doing this
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Chemical Reactions Chemical Change • reorganization • original substances form new substances with different formulas • may or may not involve a change of state • symbols used to describe chemical reaction are known as a chemical equation • Chemical equations do not have equal signs (=) they have an arrow Chemical Equations • Must follow the Law of Conservation of Matter • atoms can neither be created or destroyed during a chemical reaction • What
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04.05 Chemical Reactions: Combustion: Lab Worksheet and Rubric Before You Begin: You may either copy and paste this document into a word processing program of your choice or print this page. Procedure: 1. Iron (III) and copper (II) sulfate solution 2. Fill a small test tube halfway with copper (II) sulfate solution. Add a 2.0 gram iron rod to the solution and observe the reaction. 3. 4. 5. Lead (II) nitrate and potassium iodide solutions 6. Pour about 2.0 mL of lead (II) nitrate into the test tube
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As stated previously the purpose of this experiment was primarily based on about chemical changes. Many chemical changes are viewed through a screen‚ or read from a book. In this experiment‚ chemical changes are viewed directly from the eyes of the scientist. The procedure first begins by gathering all needed materials. Next‚ laying the first powder on four wells‚ followed by the next powders‚ each powder was placed on four wells. The liquids were then placed on each powder using the four droppers
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05.05 Mixtures and Solutions Background: Paper chromatography is one method for testing the purity of compounds and identifying substances. Paper chromatography is a useful technique because it is relatively quick and requires small quantities of material. Safety: Warnings: * Rubbing alcohol (or isopropyl alcohol) is flammable‚ so be sure to keep it away from high heat or heat sources. * Keep pigments and solutions away from your eyes‚ wash your hands carefully after coming in contact
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