NaOHStrong Base 11.95 11.95 10 Rachel Sodium hydroxide 0.01M NaOHBase 11.61 11.72 11 Ammonia 0.1M NH3 Base 9.53 9.48 12 Vinegar 0.83M HC2H3O2 Acid 2.83 2.94 13 Petr Sodium 0.5M NaC6H5O7 Weak Base 9.23 9.21 14 Sodium Sulfate 0.25M Na2SO4 Weak Base 7.24 7.23 15 Potassium Sulfate 0.25M K2SO4 Weak Base 7.37 7.58 Dilution of 1M of acetic acid to 0.1M and 0.5M 0.5M of HCl dilution: Vi(0.5M)(0.025L)1Mx1000=12.5mLof HCl used + 12.5mL of water. 0.1M of HC2H3O2 dilution: Vi(0.1M)(0.025mL)1Mx1000=2.5mL
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Title: Testing For Macromolecules Objective: Introduction Proteins are complex molecules which consists of carbon‚ oxygen‚ hydrogen and nitrogen. All proteins are made up of one or more polymers‚ known as polypeptides. Its monomers are amino acids. Protein can be divided into primary structure‚ secondary structure‚ tertiary structure and quaternary structure. It is important for all living things in the world as they form enzymes‚ antibodies and hormones. Materials and Procedures:
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irradiated with stirring for 1 hour. The resulting solution was washed with sodium bisulfate (5 ml) in a seperatory funnel and shaken until de-colorization. The organic layer was washed with sodium chloride (5 ml) and transferred to a flask where sodium sulfate was added for evaporation. The remaining product was roto-vapped to produce crystals. The remaining product was then recrystallized in hot ethanol (12 ml) and cooled to room temperature. E-Stilbene: NMR: 6.1 ppm (0.89‚ 7.1 ppm
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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 (IIII) and copper (II) sulfate solution 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. 2. Lead (II) nitrate and potassium iodide solutions Pour about 2.0 mL of lead (II) nitrate into the test tube. Add 5 to 10 drops of potassium
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REFINING Cu Heat Cu +O2 CuO2 (to oxidise some impurities) Cu (99.5% copper) ELECTROREFINING A sheet of copper is placed on the opposite end of the tank to act as the cathode‚ or negative terminal. The tanks are filled with an acidic copper sulfate solution‚ which acts as an electrical conductor between the anode and cathode. When an electrical current is passed through each tank‚ the copper is stripped off the anode and is
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the unknown limestone sample. Materials and Methods The compound calcium carbonate (CaCO3‚ CAS: 471-34-1‚ 204.89ppm) was utilized to compare its absorbance to the unknown sample of limestone # 8066 on the standard curve. Moreover‚ magnesium sulfate heptahydrate (MgSO4*7H2O‚ CAS: 10034-99-8‚ 40.8ppm) was also utilized to compare its absorbance against that of the unknown. Lab personnel from the CSU Eastbay department of chemistry stockroom performed all calibrations on the Perkin Elmer AAnalyst
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Entrance Channel linking the Boat Harbour to the sea across Shellharbour South Beach‚ a Breakwater and a Groyne. Substantial excavation/dredging is required to create the Boat Harbour‚ much of which is within an area of actual and potential acid sulfate soils. A
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of reduction they exhibit. In a solution of sufficiently high pH‚ sugars can reduce weak oxidizing agents such as cupric ions. Benedict’s solution contains sodium bicarbonate‚ sodium citrate and copper sulfate. If combined with a reducing sugar and heated‚ the divalent copper ion Cu of copper sulfate is reduced to the monovalent copper ion of cuprous oxide Cu2O which forms a precipitate ranging in color from green to brick red. Glucose + CuSO4 + heat -------------- Cu2O + H2O + oxidized
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Experiment 13B: Isopentyl Acetate (Banana Oil) Semimicroscale Procedure Taylor Levin 5.28.14 Chemistry 352- Organic Chemistry Lab Summer 2014 Purpose: To prepare isopentyl acetate (banana oil)‚ an ester‚ from isopentyl alcohol and acetic acid through the Fischer Esterification reaction. Reactions: acetic acid + isopentyl alcohol isopentyl acetate + water C2H4O2 + C5H120 CH3COOCH2CH2CH(CH3)2 + H20 Procedure: A reflux condenser was assembled
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chlorine as spectator ions. One of the solubility rules is that sulfates are soluble except in Barium. During observation we noted a color change in liquid though not a solid
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