The one main advantage of the bicameral legislative structure of this country is that limits the abuse of power of Congress. No one group or class in the U.S. can dictate the terms or make legislature that will benefit themselves at the expense of others. Unreasonable demands of the Senate can be blocked by the Representatives and in turn the Senate can kill a piece of unjust legislation passed by the Representatives. The prevention of unfair laws and legislature is a clear advantage. One difficulty
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esterification reaction that was carried out in this lab is shown in figure 1. It worth mentioning that the by-product of such reaction is water. In organic chemistry‚ the reaction in which water molecule is released is known as condensation reaction (Hornback‚ 2006). Figure1 is drawn using Chem Sketch software. a) b) Figure 1: Typical Fischer esterification reaction (a) in comparison to the specific esterification reaction used in this lab (b) The reaction can also be categorized in terms of
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Double Replacement Reactions Lab Pre-Lab 1. If a solid‚ a gas or a weakly ionizing compound such as H2O formed‚ then a reaction has occurred. 2. The formation of a solid‚ the formation of a gas and the formation of a weakly ionizing compound are the driving forces that control a double replacement reaction. 3. a. Balanced equation: CaCl2 (aq) + NaPO4 (aq) Ca3(PO4)2 (s) + 6NaCl (aq) Ionic equation: 3Ca2+(aq) + 6Cl-(aq) + 6Na+(aq) + 2PO43- (aq) Ca3(PO4)2 (s) + 6Na+ (aq)
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Title: Double Replacement Reactions (Data and Calculations) Objective: Classify the chemical reaction through observation‚ which each reagent produce when mixed with another reagent. After careful observation‚ be able to prove each observation using the net ionic equation. Background: First‚ a double-replacement reaction is when two cations in different compound switch anions‚ AX + BZ → BY. If either compounds are insoluble a precipitate occurs‚ and if there is no precipitate formed there is
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My prediction about what could be limiting Justin’s speech and language is that Justin might have a language delay because of trouble hearing. He also might develop a developmental disorder such as autism. Justin might spend too much time in watching TV since There is no substitute to human interaction when it comes to learning to talk. His home language might be different from his school. Mrs. Tate should observe Justin throughout the day especially when Justin works and plays in small group activities
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Lab Report: Titration Lab Prepare a solution of a given concentration; understand titration including acid-base reactions‚ pH‚ stoichiometry and molar equivalence. Chemicals and equipment: NaOH pellets close to purity‚ HCl 3M‚ phenolphtalein Beckers‚ flasks‚ burette‚ magnetic or manual stir pHmeter Waste management: The waste disposal will be handled through neutralization of your excess reactant to a pH between 4.0 and 10.0 and disposal with abundant rinsing. As a preparation for the
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Experimental procedure 10 4. Data‚ Results and Discussion 11 5. Conclusions 16 6. Recommendations 16 7. References 16 8. Appendices 17 List of Figures Figure (1): CEP-MKII stirred tank reactors unit ……………………………………..……….9 Figure (2): Concentration of NaOH vs. Time for the three reactors …………….…………...12 List of Tables Table (1) Experimental concentrations and conversions for the three CSTRs reactors…..12 Table (2) Theoretical concentrations and conversions for the three CSTRs reactors……..14
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OCEDURE Before beginning‚ set up a data table similar to the Data Table: Experiment Results in the Lab Report Assistant section. This experiment will create a reaction of sodium carbonate and calcium chloride dihydrate to produce a precipitate of calcium carbonate. This formula is: Na2CO3(aq) + CaCl2. 2H2O(aq) à CaCO3(s) + 2NaCl(aq) + 2H2O 1. Put on your goggles. 2. Weigh out 1.0 g of CaCl2·2H2O and put it into the 100-mL beaker. Add 25 mL of distilled water and stir to form the calcium chloride
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Flame Lab Objective: How an electron absorbs energy and re-emits it as light and why different elements have different spectra. Also to learn how to use flame tests to determine the identity of unknown mixtures. Hypothesis: We know that certain compounds will burn certain flame colors because they emit different wave lengths. Introduction: Neils Bohr made the “Bohr’s Model” in 1922‚ he found that electron travel in specified fields – which‚ when excited‚ will jump to different rings
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Limiting Reagent and Percent Yield Aim To determine the limiting reagent between the reaction of lead (II) nitrate and potassium iodide. To determine the percent yield of lead (II) iodide. Date Started: 13/4/12. Finished: 19/4/12. Data collection and processing Measurements: * Amount of distilled water: 75.0ml ± 0.5ml. * Mass of watch glass: 31.65g ± 0.01g. * Mass of watch glass + potassium iodide: 32.45g ± 0.01g. * Mass of potassium iodide: 0.8g ± 0.02g. * Mass of watch
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