experiment we were exposed to a variety of important concepts related to quantitative experimentation‚ including the proper use of glassware‚ and analytical balances. b. How did you do it? Briefly describe the procedures in 1 sentence. We calibrate a volumetric pipet and flask. We also calibrated a beaker and 50 mL buret. We also calculate the difference between the expected density and density obtained by our team. c. What happened? Briefly give the result (or results) of the experiment in 1 sentence
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Part A- Additive Volumes First‚ obtain a dry 10 mL volumetric flask that includes a stopper with it and weight on a digital scale. Be sure to get the mass at the closest milligram. Then‚ pour DI water to the calibration mark of the flask. Place the stopper back and weigh it again on the same digital scale. Once recorded‚ it is okay to pour this water down the drain. Observations: Mass of Empty Flask Mass of DI Water Filled Flask 15.114 g 25.048 g Now‚ put 100 mL of ethanol in a beaker and
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1.Make sure the volumetric flasks are clean. If they appear dirty‚ wash them with soap and water‚ and do a final rinse with DI water. Dry the outside completely. The inside may remain wet since DI water will be added to the flask. Label three of the volumetric flasks #2-4. 2. Obtain about 50 mL of the stock solution in a 100 mL beaker. Transfer about half of the solution to a large test tube labeled #1. Use only about 10 mL of solution to condition a 25.00 mL volumetric pipet‚ then use the
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two-dimensional display that appears to float. This is similar in principle to the cinematic technique ofrear projection. As dark areas of the image may appear invisible‚ the image may be more realistic than on a projection screen‚ although it is still not volumetric. Looking directly at the display‚ one would also be looking into the projector ’s light source. Heliodisplay can work as a free-space touchscreen when connected to a PC by a USB cable. A PC sees the Heliodisplay as a pointing device‚ like a mouse
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Determining Stoichiometric Ratios: NaOH and HCl & NaOH and H2SO4 Reactions Contents Introduction 3 Materials & Procedure 4 Raw Data 8 Processed Data 15 Graphs 16 Conclusion & Evaluation 17 Introduction Background Information Stoichiometry is a critical component in chemistry‚ and helps in understanding the quantitative relationship between the number of moles of reactants and products in a reaction. Objective In this experiment‚ the reactions
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Floyd Askew 3/19/13 CHEM 1211L Lab Report Introduction The purpose of this lab is to use volumetric analysis to determine the concentration of unknown substances. A sodium hydroxide solution is standardized to assist in finding the concentration of an acetic acid. An indicator must be used to pin point the equivalence point‚ the point in which 1 mole of a substance is equal to 1 mole of another. When that is found‚ we can determine the concentration. HC2H3O2 (aq) + NaOH (aq)
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Analytical Chemistry Spring 2014 September 2nd‚ 2014 Pre-Lab 1: Calibration of Volumetric Glassware Objective: The sole objective of this lab is to become acquainted with the scientific techniques that are utilized in this lab including: data analysis‚ analytical balance‚ and use of glassware and lab materials. To demonstrate these basic concepts‚ a 50 mL buret and 10 mL volumetric flask will be calibrated. Apparatus: Procedure and Equipment: The following equipment
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Introduction Titration is a volumetric analysis technique used to find the concentration of an unknown substance. There are several types of titration but the one used for this experiment is called acid-base titration as the substance we are titrating is acidic. Acid-base titrations are based on the neutralisation reaction between the analyte and the acidic or basic titrant. The analyte is the solution of unknown concentration and the titrant is the solution of accurately known concentration used
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Calibration of Volumetric Glassware Nur Farah Nabilah Binti Ahmed Zhaini Muhammad Imanuddin Bin Azman Maisarah Binti Alias Summary In this experiment‚ The purpose of this experiment is to investigate the measurement of the actual volume contents of volumetric glassware. In the beginning of the experiment‚ the volumetric glassware should be clean and dry before used. The volumetric glassware‚ measuring cylinder and pipette should be handled with care and all the precautions
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Heliodispla y CHAPTER 1 INTRODUCTION Even though modern technology has invested millions‚ even billions‚ into projection screen technology‚ high definition projectors‚ and even projectors for our cell phones‚ we have forgotten that we will always need something to project on. Unfortunately‚ with the tragic proliferation of advertising these days‚ we are probably looking at a future world where all the space on the buildings is taken for billboards and other various projected ads. The only
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