Name: Kamaal Thomas |Date: January 4‚ 2011 | |Graded Assignment Lab Report Answer the questions below. When you have finished‚ submit this assignment to your teacher by the due date for full credit. (8 points) |Score | | | 1. For Part 2: Single-Displacement Reactions: For each of the four single-displacement reactions‚ describe what happened in each well. If a chemical reaction occurred‚ write a balanced equation for it. Then using the A‚ B symbols‚
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and depth research report on China Sodium Hyaluronate Injection industry. The report firstly introduced Sodium Hyaluronate Injection basic information included Sodium Hyaluronate Injection definition classification application industry chain structure industry overview; international market analysis‚ China domestic market analysis‚ Macroeconomic environment and economic situation analysis and influence‚ Sodium Hyaluronate Injection industry policy and plan‚ Sodium Hyaluronate Injection product specification
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under salt stress in all cultivars tested; plant dry weight decreased by about 15% in ILC1919; and in Sirio and Lechoso about 50% with the highest salt dosage (100 mM NaCl). ILC1919 showed a less growth accompanied by a lower dry matter formation under low salt conditions compared with most of the salt sensitive cultivar. Nitrogenase activity decreased by about 60% in the salt-resistant cultivar (cv. ILC1919) and more than 90% in salt-sensitive cultivars (cv. Sirio and Lechoso) with the highest salt dosage
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aqueous solutions of calcium chloride and sodium carbonate. These solutions will be prepared from 2.01 g of calcium chloride and 1.06 g of sodium carbonate . Materials: 3 beakers 100 mL graduated cylinder rubber policeman funnel filter paper Procedure: 1. Put on your safety goggles. 2. Obtain two clean beakers. Rinse the inside of the beakers with a small amount of distilled water. 3. Obtain the correct amounts of calcium chloride and sodium carbonate. Enter these masses in your
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Experiment 11 Date: 28-3-2011 Title: Interpretation of reaction by the Le Chatelier’s principle Objective: To determine the factors that affecting the equilibrium position Introduction: Le Chatelier’s principle states that if a system in equilibrium is subjected to a change‚ the equilibrium position of the system will shift in a direction to minimize the effect of the change. Iron(III) ions and thiocyanate ions (NCS-) react in solution to produce thiocyanatoiron(III) (FeNCS2+)‚ a
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Investigating Chemical Equilibrium (Experiment 19 A) Purpose: 1. to recognize the macroscopic properties of five chemical systems at equilibrium 2. to observe shifts in equilibrium concentrations as stresses are applied to the systems 3. to observe a shift in equilibrium concentrations associated with changes in temperature 4. to explain the observations obtained by applying Le Chatelier’s principle Materials Required: See page 209 Heath Chemistry Laboratory Experiments Procedure:
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Data 1. Record your data for each of the trials in Table 2. 2. Record your reaction observations (Step 8) below: A white powdery substance formed when the two reactants were mixed Table 2: Reaction product data Mass (g) Example Trial 1 Trial 2 Mass of CaCl2 1.00 2.00 3.00 Mass of K2CO3 2.5 g 2.50 2.50 Mass of filter paper 0.8 g 0.80 0.80 Mass of watch glass 38.5 g 38.5 38.5 Combined mass of product‚ filter paper‚ and watch glass 40.2 g 42.3 43.3 Mass of dry product 0.9 g 2.00 3.00 Calculations
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Experiment 5: Wittig Reaction Purpose The purpose of this experiment is to synthesize trans-9-(2-phenylethenyl) anthracene using a wittig reagent formed by reacting phosphonium chloride with base. Experimental In a reaction tube‚ (0.200g) benzyltriphenyl phosphonium chloride‚ (0.115g) anthraaldehyde‚ and (.6ml) dichloromethane (DCM) is mixed together with a stir bar. We stirred the mixture rapidly and added (0.26ml) of a 50% NaOH solution dropwise. The mixture was stirred for 20-30
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GLENDALE CHEMICAL PRODUCTS PTY LTD v ACCC (1999) ATPR 41-672 Plaintiff: Michael Barnes Defendant/Appellant: Glendale Chemical Products Pty Ltd –Supplier of Caustic Soda which is called “DRANO” Respondent: Australian Competition & Consumer Commission Prepared By: GLENDA B. GAERLAN Presented To: PETER MCGUINNES BUSINESS LAW 1st Semester 2010 Background Facts: Michael Barnes bought a 500g of caustic soda called “DRANO” at a local store
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EXPERIMENT NO. 9 CHEMICAL EQUILIBRIUM Audrey De Castro FCD3‚ Group 9‚ Ms. Sarah Sibug Kristine Tavares March 27‚ 2014 I. ABSTRACT Chemical equilibrium is mostly involved in industrial processes such as synthesis
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