Determination of Reaction Rate Law from the Reaction of Crystal Violet with Sodium Hydroxide ______________________________________________ Abstract: This experiment helps determine the rate of reaction of crystal violet while it reacts with sodium hydroxide with respect to crystal violet. The amount of sodium hydroxide is varied in this experiment while crystal violet is kept at a constant. The transmittance of crystal violet is observed and recorded using a colorimeter and the data obtained is
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To what extent was there a post-war consensus? (45) Despite some historians trying to argue that the notion of a “post-war” consensus becomes more blurry and inaccurate the closer one studies modern Britain from 1951-2007‚ there is a wealth of resources and abundant forms of evidence to firmly claim confidently that a post-war consensus did exist; permeating and diffusing throughout British politics‚ economics‚ societal events and also foreign affairs. Economics: From 1951 to 1979 both parties
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Lab 5 The Diffraction Grating Chinua McDonald Objective: To measure the wavelength of light with a diffraction grating. Theory: The two types of diffraction gratings are the transmission and reflection gratings. They are made by ruling on a piece of glass or metal a number of evenly spaced lines with a fine diamond point. Diffraction phenomena can be analyzed in terms of Huygens’ principle‚ according to which every point on the wave front of a wave should be considered as a source
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Lab 1: Observation of Chemical Changes Name: Tyler Lee Lab Partners: none Date of Experiment: Feb 26 2015 Location: My House Course Number: CHE111 Abstract: The point of this lab was to test and observe chemical changes when mixing chemicals together and also through heating chemicals. Experiment and Observations: The experiment performed in the first part of this lab was to mix various chemical solutions together and then observe and record the chemical changes‚ also if a chemical
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Oxalic Acid Lab Aim: Use acid base titration to determine the number of water molecules in hydrated hydrochloric acid. Apparatus required: Oxalic acid solution 250 cm3 Weighing bottle Digital balance Beaker (250 cm3) Distilled Water Volumetric Flask 250cm3 Filter funnel Pipette Burette 50cm3 Retort Stand Beakers 100cm3 Standardized sodium hydroxide solution 0.1M Pipette filter Conical flasks 250cm3 Phenolphthalein Indicator Procedure 1) Rinse the burette with distilled
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Biology Lab #1: Chemical Diffusion Purpose To discover how the size of a cell affects the diffusion of chemicals throughout the cell. Hypothesis I predict that as the cell size increases the diffusion depth and the diffusion rate will decrease. Equipment • Eye protection • 250 mL beaker • Timing device • Scoopula • Ruler • Scalpel • Sodium hydroxide solution • 3 different sized cubes of phenolphthalein agar • Paper towels Purpose
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defined the first seven areas of security responsibility affair‚ namely three full provinces and four other provincial capitals – in particular many Afghans look at the post-2014 period with fear. Our guest blogger Almut Wieland-Karimi(*) has thought about some scenarios – interestingly one which features a negotiated settlement with all post-2001 achievements preserved is not part of her list. [Destroyed Chehelsutun Palace in Kabul‚ result of the last civil war secenario -- photo by Thomas Ruttig‚ 2005]
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Access the virtual lab and complete the experiments. Part One (Flame Test): 1. Create and complete a data table for Part One of the lab. It should include the name of the element (or unknown) examined and the color of the observed flame: Barium-green Calcium-red Sodium-yellow Rubidium-purple Potassium-blue Lithium-pink 2. Identify each unknown from Part One of the lab and briefly explain why you identified each unknown as you did.: Unknown 1-yellow. I think it is Sodium because their flames
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America’s Post Civil War Growing Pains History 105: Contemp U.S. History July 23‚ 2013 Professor Lewis There was a period around the time the Civil War ended known as the Post Civil War. This was a time America named Growing Pains. This name was given due to all the troubles and things they went through. There was so much that happened during this time and this is what made this era a known time period. During 1865-1900 post civil war periods‚ two major turning points would be segregation
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product. After simple distillation and measurement‚ a total of 17 mL of the product was obtained. Side Reactions: Summary of experiment: The following experimental procedure was directed from Introduction to Organic Lab Techniques CHM2211L Coursepack by Dr. Edward Kluger found on pages 18- 20. Using 22 mL of t-Pentyl alcohol and 50 mL of 37.3% concentrated HCl‚ a mixture was created and swirled in a 125 mL separatory funnel. After the solution had been mixed for
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