Name: Taylor Wright Lab Partners: Cody‚ Jeremy‚ Haly‚ Eric‚ Brody Date: October 14th Class: Chemistry 20 Charles’ Law Lab Introduction: The purpose of this investigation is to demonstrate how water temperature affects the volume of a balloon. According to Charles’ Law‚ temperature and volume increase proportionally‚ as long as chemical amount and pressure remain the same. Research Question: How does the volume of a balloon react to changing temperatures? Hypothesis: If we increase the temperature
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In this laboratory voltmeters where utilized to take reading of three different electrochemical reactions: Pb/Zn‚ Pb/Cu‚ and Zn/Cu. A salt bridge was placed between two reactions containing metal strips in separate aq solutions. The salt bridge was placed in order to balance the reaction. The voltage measurements for Pb/Zn‚ Pb/Cu‚ and Zn/Cu where .595 V‚ .479 V‚ and 1.072 V accordingly. The values obtained where then used to determine the voltage value for the reduction half. The resulting cell potential
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Finding the rate law was the overall goal of the laboratory. When finding the wavelength of the Azo Orange II dye‚ the highest wave was the point used‚ 483nm. The plotted points of the different concentrations absorbance’s made sense to have a steady upward slope because the dye was diluted in steady increments from full to ¾ and so on. Beer’s law was used next to calculate the absorbance of they time over time as bleach was added. One the absorbance value was calculated‚ the concentrations were
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purpose of this lab was to find the theoretical and experimental percentage yields of the double displacement reaction between the solutions Lead (II) Nitrate (PbNO3) and Potassium Iodide (KI). It is important to obtain amounts of Lead (II) Nitrate and Potassium Iodide as close to 1.44g as possible. This reaction creates Lead (II) Iodide and Potassium Nitrate. The precipitate during this reaction is Lead (II) Iodide. The balanced equation is Pb(NO3)2 + 2KI= PbI2 + 2KNO3. In this lab the Lead (II) Iodide
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Redox Titration Lab ABSTRACT: In this lab‚ 0.010 M purple-colored potassium permanganate solution was standardized by redox titration with iron (II) ammonium sulfate hexahydrate (FAS). The average mass of the three flasks of FAS was 0.483 grams. Once the concentration of the standard solution of KMnO4 (aq) was determined‚ it was used to determine the concentration of Fe2+ in iron pills. On average‚ there was 0.01813 L of solution used. With this information and the balanced net-ionic equation
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Abstract The purpose of this experiment is to synthesize a common organic product called acetylsalicylic acid (aspirin)‚ and to become familiar with the optimum conditions needed for successful yields. Aspirin is produced from an acid catalyzed reaction between salicylic acid with acetic anhydride. The crystalline aspirin is synthesized and purified by recrystallization‚ although there is not a hundred percent yield due to sources of error. Introduction Aspirin is a medicine commonly found in
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Beer Lambert Law Lab Purpose: The purpose of this lab is to prove the Beer Lambert Law experimentally. The various solutions used for this experiment are tap water mixed with food colouring‚ Introduction: The Beer Lambert Law shows the relation between absorbance of light of an object‚ the molar absorptivity‚ the concentration of the substance‚ and the distance the light travels. The Beer Lambert Law states that there is a linear relationship between the concentration of a solution and the
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observe how the change in solvent polarity affects the rate and to determine the kinetics of a solvolysis reaction. In this experiment‚ we used 1-chloro-1-phenylethane in acetone in one reaction with 50% ethanol-50% water and in another reaction with 40% ethanol-60% water. To monitor he rate of reaction‚ we would need the concentration of the alkyl chloride at the beginning of the reaction and at a time t‚ but since we did not determine the concentrations‚ we monitored the rate of formation of
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Chemistry 42 Course Syllabus Introductory General Chemistry Santa Rosa Junior College Spring 2013 Section 5618 - Course Information Lecture W‚F 7:30 – 9:00 PM (1999 Bech)‚ Lab W 9:00 – 12:00 PM (1948 Bech) Instructor of Record: Dr. Valeria Martinovic My office is in 1914 Bech. My Spring office hours are Mondays 10:00-10:30 PM‚ Wednesdays 7:00-7:30am‚ 9:00-10:30am‚ Fridays 7:00-7:30am. Leave a message at any time by e-mail at vmartinovic@santarosa.edu. Course description: Welcome
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Wai Long Lam Experiment 9: Rate Law Determination of the Crystal Violet Reaction Goals: Under stand 1st‚ 2nd ‚ and 3rd order chemical reactions‚ learn graphing options available on LogerPro Purpose: Determine the reaction order with respect to crystal violet for the reaction between crystal violet and sodium hydroxide. Introduction: The rate expression for this reaction is of the form: rate = K(CV+)M(OH-)N Where k = re constant‚ m is the order of the reaction with respect to the concentration
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