tongs Spatula Balance Meeker burner Ring stand Iron ring Wire gauze Forceps Sulfur Iron filings Sodium Bicarbonate Sodium Chloride Sugar Sand Magnesium ribbon Hydrochloric Acid Distilled water Filter paper 9 disposable dishes Procedure: 1. Label 7 of the dishes with the names of the following products: Sulfur‚ Iron‚ Sodium Bicarbonate‚ Sodium Chloride‚ Sugar‚ Sand‚ and Magnesium. Place small samples of each in the appropriate dishes. 2. Examine each sample with a magnifying glass
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excess. At the second part‚ student needs to measure the pH of different solution by using universal indicator paper and determine whether each solution is acidic‚ basic or neutral. Lastly‚ the precipitation reaction is observed by using phosphates‚ chlorides and silver halides groups. AIMS The main objective of this experiment was to identify certain inorganic reaction types and the differences in solubility of silver halides. Thus‚ a series of inorganic reactions was carried out as an introduction
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What is the total number of atoms in (NH4)2SO4? (1) 10 (2) 11 (3) 14 (4) 15 22. Write the correct formula for the following binary ionic compounds. (a) Lithium fluoride LiF (b) Calcium oxide CaO (c) Aluminum nitride AlN (d) Beryllium chloride BeCl2 (e) Potassium iodide KI (f) Aluminum oxide Al2O3 23. Write the correct formula for the following binary molecular compounds. (a) Carbon monoxide CO (b) Boron tribromide BBr3 (c) Sulfur hexafluoride SF6 (d) Carbon dioxide CO2
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Spectra of several metallic ions. Materials: Safety glasses 10 test tubes Test tube rack Paper Pencil 50 mL beaker Bunsen burner Nichrome wire Barium Nitrate Copper Nitrate Strontium Nitrate Lithium Nitrate Potassium Nitrate Sodium Chloride Calcium Nitrate Unknown solutions A‚B‚ & C Hydrochloric Acid Wash bottle (with distilled water) Procedure: 1. Label the test tubes with the names of the solutions and unknowns. 2. Place about 5 mL of each solution into each test tube‚ and
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methylene chloride 2.) Cap the tube securely and shake it vigorously‚ venting frequently 3.) Allow the layers to separate 4.) If the layers do not separate well‚ the mixture may be spun in a centrifuge. Or stir with a spatula or add about 1 mL of a saturated sodium chloride solution 5.) Using a Pasteur pipette‚ transfer the lower methylene chloride layer to a clean‚ dry‚ 5-mL conical vial. 6.) Repeat this extraction procedure two more times with fresh 1.0-mL portions of methylene chloride and place
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Lab performed: 1/22/15 Chem 2203-012 Report due: 1/29/15 TA: Kavitha Akula Experiment 4A: Determination of a Partition Coefficient for Benzoic Acid in Methylene Chloride and Water‚ and Experiment 4B: Solvent Extraction I: Acid-Base Extraction Using the System Benzoic Acid‚ Methylene Chloride‚ and Sodium Bicarbonate Solution Objective The purpose of this experiment is to familiarize oneself with the general procedures determining a partition coefficient at the microscale level
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mL beaker‚ heated it up to separate the sodium chloride and benzoic acid from the insoluble sand‚ then poured out the benzoic acid and sodium chloride into a separate cup and allowed I to chill in an ice bath for approximately five minutes. I dried up the sand and calculated the net weight for that. I poured the benzoic acid and sodium chloride mixture into a filtered funnel that caught the majority of the benzoic acid and allowed the sodium chloride to drain through to the cup. I allowed the two
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and has had all of its water removed. Purpose: The purpose of this experiment is to identify the unknown hydrate‚ selected by your teacher. Apparatus: Evaporating dish Hot plate Scale Gauze mat Tongs Scoopula Materials: barium chloride (BaCl ) → hydrate crystals 2 Procedure: 1. First‚ preheat your evaporating dish on a hot plate for two to three minutes. Your dish should be clean and dry before use. 2. 3. 4. 5. 6. 7. 8. After your evaporating dish is heated
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Part Ca)Up until the 1940’s rubber had only been obtained from the latex of rubber trees(Hevea brasiliensis) in plantations situated in tropical areas such as Malaya and Burma. The demand for rubber increased significantly during world war 2 as rubber was needed for tyres of military vehicles and the supply was interrupted by the conflict between the countries. Scientists in Germany and the US developed synthetic polymers that could replace rubber. Even after the war ended the traditional sources
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Abstract The preparation of 7.7-dichlorobicyclo [4.1.0]heptane which is also known as 7‚7-dichloronorcarane was done by reacting cyclohexene ‚ chloroform and a base( 50% aqueous sodium hydroxide) with benzyl triethylammonium chloride. The latter being a water soluble phase transfer catalyst (PTC).reaction was performed at room temperature and was distilled at atmospheric pressure. The mechanism of action of the above mentioned PTC is described in the text along with the mechanism for the addition
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