0 mL KI solution was added in a flask using a graduated cylinder. 2 separate 1 mL pipettes were used for measuring 1.0 mL Na2S2O3 and starch solutions (Department of Chemistry and Biology‚ 2012). These 2 solution were also added to flask A. 48.0 mL KNO3 solution was added into Flask A. 25.0 mL of (NH4)S2O8 (ammonium peroxodisulphate) was measured in a 100 mL dry beaker‚ named Beaker B
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Protein Hydrolysis and Characterization Group 7 Niez‚ Robert Francis‚ *Orbin‚ Alfonso Ricardo* Parro‚ Athena Emmanuelle Peralta‚ Christian Department of Biological Sciences‚ University of Santo Tomas‚ Manila‚ Philippines • Abstract Hydrolyzed Protein is protein that has been hydrolyzed or broken down into its component amino acids. While there are many means of achieving this‚ two of the most common are prolonged boiling in a strong acid (acid-HVP) or strong base or using an enzyme such
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Instructions You must SHOW WORK AND PROBLEM SET-UP for CREDIT. You have to SUPPORT your answers by calculations and/or reasoning. If you do not understand something in the assignment or are not sure how to approach a question - EMAIL me before you submit. This assignment must be submitted no later than November 22nd‚ 2011. 1. What is a true solution? Explain why the solute does not settle out of a solution. Is it possible to have one solid dissolved in another? Explain. In metals it would
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Protons = ___7___# of Neutrons = ___7___# of Electrons = ___7___ # of Electrons in the valence shell? __5___ 8. Identify the following as synthesis‚ decomposition or exchange reaction a. 2HG + O2 = 2HgO _______synthesis_______ b. Fe2+ + CuSO4 = FeSO4 + Cu2+_______exchange reaction______ c. HNO3= H++ NO3- ________decomposition________ 9. Explain the basis of Ionic bonding. Give an example. They are made up of cations and anions. 10. Explain the basis of Covalent bonding.
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EXPERIMENT 3: IDENTIFICATION OF FOOD CONSTITUENTS IN MILK. INTRODUCTION: In this experiment two milk samples are given and its compositions are tested using different methods such as using benedict solution to test the presence of reducing sugar‚ using copper II sulphate to test the presence of protein‚ using K3( to test the presence of fat. However in this experiment‚ not only are the milk tested for its composition‚ the amount of the particular substance such as reducing sugar‚ protein and
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Copper II Sulfate * Scale * Scoop * Thermometer * Weighing plastic container Method/Procedure 1. In the lid for the foam cup make a hole in the center to fit the thermometer. 2. Accurately pipette 20.00 cm3 of 1.00 mol dm-3 CuSO4 solution into another foam cup. 3. Weigh about 4 grams zinc powder in a weighing plastic container. 4. Use the thermometer to record the temperature of the Copper II Sulfate solution accurately every 30 seconds for three minutes. 5. At
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AIM TO STUDY THE VARIATION OF CONDUCTANCE WITH CHANGE IN DISTANCE‚MOLARITY AND TEMPRATURE. CERTIFICATE I have the pleasure to certify that RAGHUVANSH SINGH BHALLA student of class XII (Science) of J.D. Tytler School has persuade his work and prepared the dissertation on the topic. To study the variation of conductance with change in distance‚ molarity and temperature . Under my supervision and guidance‚ this is being submitted for
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Experiment 3: Enthalpy of Various Reactions Introduction A coffee cup calorimeter is an apparatus that is used to measure the quantity of thermal energy gained or lost in a chemical reaction. This experiment utilizes this apparatus‚ which is made from two styrofoam cups with plastic lids and a thermometer‚ to measure changes in thermal energy of various reactions. When using this type of apparatus‚ it is assumed that no heat is transferred between the calorimeter and the surroundings‚ and that
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1. Calculate the molecular mass/formula weight for: KHSO3 2. How many of each type of atom are present in 0.667 mol of [CrCl2(NH3)4]Cl 3. Calculate the molecular formula for the compound that contains 40.92% C‚ 4.58% H‚ 54.50% O‚ and has a molecular mass of 176 u. 4. When 1.019 g of potassium reacts with O2‚ it forms 1.860 g of a rather strange compound. Find the empirical formula of this compound‚ and explain why it is strange. 5. How many grams of BaSO4 (s) are formed when an excess of BaCl2
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In this lab we studied stoichiomentry. We also reviewed the mole-mole relationship between copper and iron in a chemical reaction. The stoichiomentry of mass is that during the heating the experiment does loose mass .This mean that mole and mass did change. An Example of real world is Masses and volumes of products are extremely important in key reactions such as the deployment of air bags in vehicles‚ carbon dioxide production to help bread rise‚ and the Production of ammonia gas for industries
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