Unknown # 2 Mass of Mohr’s Salt: 0.2040 1. 5mL of 6M acetic acid was measured and transferred into a 100mL volumetric flask with a pipette and diluted to the mark. Concentration = [0.2040(±0.0001)g/100(±0.08)mL]*[(1mol/392.16g)/(1L/1000mL)] = 0.005202(±0.09382%) = 0.005202(±0.000005)mol/L 2. 10mL of the above stock solution was transferred to a 250 mL volumetric flask and diluted to the mark. Concentration = [0.005202(±0.09382%)mol/L]*[10(±0.02)mL/250(±0.12mL)] = 0.00020808(±0
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Acid-Base Titrations A Titration of Potassium Hydroxide Phthalate and Sodium Hydroxide Hanna Piper Department of Chemistry‚ SUNY College at Brockport‚ Brockport‚ NY 14420 Chemistry 205.06 Abstract Titrations are used to find the molarity of an unknown solution. A titration begins with an analyte and titrant being used to measure the unknown molarity of the analyte. In the following experiment‚ sodium hydroxide was used as the titrant and potassium hydroxide phthalate was used as the
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Naum Gabo‚ a pioneer of constructive art‚ was born Naum Neemia Pevsner in Russia in 1890. He began making constructed sculpture in Norway in 1915‚ when he took the name of Gabo. He and his brother Antoine Pevsner‚ returned to Russia at the time of the Revolution. In 1920 Gabo wrote the Realistic Manifesto‚ an expression of the aims and philosophy behind his art‚ which was signed by Antoine and was posted on the streets of Moscow. In 1922 Gabo left Russia for Berlin‚ to exhibit in the Erste Russische
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Bioprocess Integration – LM3452 Assignment 1 September 23‚ 2013 Enzymatic conversion of lysine to 1‚5-diaminopentane Sebastiaan Keuter Wouter Overbeek 1545558 4058356 Question 1 Table 1: Acid dissociation constants Ka‚i of lysine‚ CO2 and 1‚5-diaminopentane. Where index “i” is depicts the group arranged from Compound lysine CO2 1‚5-diaminopentane Ka‚1 10-2.2 10-6.4 10-9.1 Ka‚2 10-9.0 10-10.3 10-10.3 Ka‚3 10-10.5 - Question 2 Figure 1 shows the reaction
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Murder mysteries streaming through the nation’s television channels have become a source of entertainment for some individuals; however‚ the officers that discovered the body of a local business man near Robins‚ NC were faced with the reality. The man’s cause of death was listed as drowning because he had a large amount of water located in his lungs. The water in the man’s lungs had a high concentration of phosphates. By analyzing water samples from Woodlake‚ Seven Lakes‚ Reservoir Park‚ and Lake
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= 0.0514 mol dm-3 Evaluation Percentage error % Error = Uncertainty x 100 Actual reading Instrument | Uncertainty | Reading taken | % Error | Balance(g) | 0.10 | 12.90 | 0.77 | Burette(cm3) | 0.01 | 2.42 | 0.41 | Volumetric pipette(cm3) | 0.02 | 25.00 | 0.08 | Flask(cm3) | 0.10 | 250.00 | 0.04 | Ensuring accurate results – * Ensure apparatus is free of contamination by flushing out with liquid to be used or distilled water. * Do trial titration first
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● Cobalt(II) Chloride Hexahydrate CoCl2.6H2O‚ was weighed in a weighing boat. The Cobalt(II) Chloride Hexahydrate was transferred into a 100mL volumetric flask dissolved in water. ● 25 mL of the dissolved was measured‚ using a graduated cylinder and few of the dissolved Cobalt (II) Chloride Hexahydrate‚ was poured into test tube. The test tube was labeled with a tape‚ to signify 25 mL and the spectrophotometer was used to record the U-V visible ABS (absorbance spectrum) with the wavelength of 515
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stand pipette‚ 25 cm3 pipette filler methyl orange indicator 1 M NaOH solution‚ standardized 1 M hydrochloric acid‚ standardized ethanol wash-bottle with de-ionized water mortar and pestle forceps safety spectacles 2 beakers‚ 100 cm3 volumetric flask‚ 250 cm3 filter funnel‚ small magnetic stirrer pH meter electronic balance Procedures 1. The attached membrane of the eggshell was removed carefully by forceps and the remaining eggshell was ground into a fine powder with mortar
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SCHOOL OF BIOTECHNOLOGY VIGNAN UNIVERSITY: Vadlamudi B .Tech- BIOTECHNOLOGY STUDENTS FORMAT –FORSUBMITTION OF PROJECT REPORT (MINI PROJECT) 1. Title/Component of the Project 2. Introduction about the topic 3. Previous studies 4. Objective 5. Methodology/ Material & Methods 6. Process 7. Results and Discussions 8. Bibliography/ References STUDIES ON AFLATOXIN PRESENT IN CHILLES A Mini Project Report Submitted in partial fulfillment of the requirement for the
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E20-1 Experiment 20 Consumer Chemistry: Vitamin C in Fruit Juices The Task The goal of this experiment is to determine the concentration of vitamin C in a range of different fruit juices (fresh and preserved) using titration and to rank these sources of vitamin C. Skills At the end of the laboratory session you should be able to: * use a pipette correctly‚ * use a pipette filler safely‚ * manipulate a burette and carry out a quantitative titration properly‚ * weigh a sample
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