1/03 1 Solubility data for four different salts in water at 60oC are shown in the table below. Which salt is most soluble at 60oC? (1) A (2) B (3) C (4) D Answer--> Choice D =0.5g/g H2O 2 Base your answers on the information below. When cola‚ a type of soda pop‚ is manufactured‚ CO2(g) is dissolved in it. 1. A capped bottle of cola contains CO2(g) under high pressure. When the cap is removed‚ how does pressure affect the solubility of the dissolved
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motion. 2. To establish the relationship between angle of repose ∅ and μ METHODOLOGY Determination of the coefficient of Friction. - Place the wooden plane horizontally. Measure the weight of the block. Slowly add weights in the pan until you observe a uniform sliding motion of the black. Records the weight. Calculate μ for each trial and finally determine the average value. Determination of the Angle of Repose. - Remove the string that is tied to the block‚ facing its
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Chem 105 Guide to the Formal Laboratory Report The purpose of a formal report is to communicate effectively to another person the goal‚ procedure‚ data analysis method‚ and results of your laboratory work. The report is divided into several well-defined sections. Each section must be present in a complete report. To earn an outcome point for the laboratory report‚ a student must submit a formal lab report that earns a score of at least 90/100. Each error (factual‚ grammatical‚ typographical
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Discussion: Recrystallization is a widely-used technique to purify a solid mixture. The desired product is isolated from its impurities by differences in solubility. Insoluble impurities and colored impurities can be removed from hot solvent through the use of activated carbon and filtration. Soluble impurities remain in the cold solvent after recrystallization. The desired product should be as soluble as
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Experiment 4A: Determination of a Partition Coefficient for Benzoic Acid in Methylene Chloride and Water Experiment 4B: Solvent Extraction I: Acid-Base Extraction Using the System Benzoic Acid‚ Methylene Chloride‚ and Sodium Bicarbonate Solution Objective A: To accustom participants (students) to general procedures that are used to obtain a partition coefficient at the microscale level. We will gain experience in such practices as the transfer of microliter volumes of solutions with a Pasteur filter
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Acid Base Titration Purpose: The purpose is to calculate the molarity of a NaOH solution by titrating the base with 5mL of standard HCl solution in each trial. By adding the base with unknown molarity to the acid with 0.10M the molarity of NaOH can be calculated. The base‚ NaOH‚ helps bring the pH of the acid‚ HCl‚ closer to seven‚ which neutralizes it. When using the buret the amount of NaOH used is able to be determined. Then by writing a balanced chemical equation and using the titration
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Results and discussion The aqueous solubility of midazolam is a function of both the imidazobenzodiazepine ring opening‚ which is a fully reversible process‚ and the ionization of the drug molecule play an important role in the supramolecular complexation with water-soluble cyclodextrins (Loftsson et al.‚ 2001). Therefore‚ the total charges were assessed from the acid dissociation constant determined for different forms of midazolam as depicted in Figure 1. First‚ predicted negative decimal logarithm
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Discussion Although only the extraction of strawberry DNA was performed in this lab‚ this section will address the roles of each step taken and the reagents used during the extraction of DNA from animal tissue as well‚ and compare it to the steps taken in the strawberry protocol. As described in the procedure using strawberries‚ the first step was to mash them into pulp using a mortar and pestle. The main goal from this physical disruption was to break the solid material consisting of any connective
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LAB REPORT NUMBER TWO DATE: 3/25/2010 inal attachment Lab Experiment number 11 PURPOSE: To learn the Gram stain technique‚ the reason for the stain‚ and how to identify the results of the organisms stained. MATERIALS: Bunsen burner‚ inoculating loop‚ staining tray‚ glass slides‚ bibulous paper‚ lens paper‚ oil‚ and microscope METHODS: Apply Crystal Violet (Primary stain) for 1 minute. Rinse with D-water Apply Iodine (Mordant) for 1 minute. Rinse with D-water. Apply Alcohol (Decolorize) for
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MEC 325/580 Lab Report CNC Machining Lab Report Date: March 18‚ 2013 Group Leader: Jian Wu Team Members: Group Number: G4 Regment No.: D Insturctor: CONTENTS 1.Objective and introduction. 2.Principles and practice. 3.Design and result. 4.Conclusion and recommendations. Appendices 1. Objective and introduction * Objectives Operate the CNC milling machine using G-codes‚ M-codes in a CNC program. * Equipment: Minitech CNC machine (Series 2) * Machine
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