Tessa Landauer Chemistry 0340 Qualitative Analysis Shaopeng Zhang January 26‚ 2015 I submit this laboratory report as an original document. I assert that all ideas and discussion of data contained herein is my own work unless otherwise referenced. Tessa Landauer Abstract The goal of the experiment was to isolate and purify the unknown D liquid and solid by using its acidic and basic characteristics in a chemically active extraction then to identify the unknowns by analyzing the physical properties
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The purpose of the lab was to measure the effectiveness of antacids at neutralizing excess stomach acid. A neutralization reaction is when an acid and a base react to form water and salt. To illustrate‚ H+ hydrogen ions from the acid react with the hydroxide ions OH- from the base. Antacids are taken to relieve heartburn or indigestion caused by excess stomach acid. For instance‚ antacids such as alka-seltzers contain baking soda which is highly reactive with acids‚ settling the discomfort of indigestion
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Statics and Uncertainty Marilyn Esthappan Lab Partner: Nisha Sunny TA: Sajjad Tahir Physics Lab 106 May 29‚ 2011 1-3pm THEORY: Statistical variation and measurement uncertainty are unavoidable. A theory is consistent if the measurement is 2m +/- 1m. Uncertainty rises from statistical variation‚ measurement precision‚ or systematic error. EXPERIMENTAL OVERVIEW: Part 1. Coin Toss: Statistical Variation: Sixteen coins were tossed nine times and the number of heads was counted to determine
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Experimental Research Craig S. Ricard PSY/285 Due: March 11‚ 2012 Experimental Research Recently‚ a group of teachers wanted to determine the effectiveness of using anti-bacterial gels against the spreading of germs from person to person and overall preventing them from getting the cold or flu. In order to see if using anti-bacterial gels prevents getting the flu or a cold an experiment must be performed with the teachers. The experiment must be properly performed by randomly dividing
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The Effect of Concentration on Absorbance Background Information The purpose of the “Determining Solution ‘Concentration’ Using A Spectrophotometer” lab was to use a spectrophotometer to find the relationship of concentration and absorbance obeying the Beer-Lambert law‚ which states concentration and absorbance are directly related‚ to then further determine the concentration of three unknown solutions. With the assumption that the solutions obey the Beer-Lambert law it is predicted that as concentration
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Research Question How will the addition of different pH buffers to amylase affect the rate of starch digestion measured using starch and iodine? Introduction Amylase is an enzyme found in human saliva and pancreas. It is the digestive enzyme that is needed to breakdown starch molecules. Amylase must be kept at certain conditions to function at its optimum level. This experiment will explore the effect of pH (1‚ 4‚ 7‚ 10‚ and 14) on the function of amylase by using starch and iodine. Usually
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Running Head: WRITING A FORMAL LAB REPORT Writing a Formal Lab Report Using APA Format Michael Betco AP Physics 1 ChangZhou Senior High School of Jiangsu Province 1 WRITING A FORMAL LAB REPORT 2 Abstract WRITING A FORMAL LAB REPORT 3 Writing a Formal Lab Report Using APA Format This introduction is also often referred to as the ‘purpose’ or ‘plan’ section. It should include two main categories: Purpose (or Objective) This part of the experiment expressed clearly in only one or two sentences
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Myers Beaird MUSC109: Intro to Experimental Music Final Exam/Response Question Fall 2013 In the words of John Cage‚ “I compose music. Yes‚ but how? I gave up making choices. In their place I put the asking of questions.” Just having performed John Cage’s Musicircus‚ I found it only fitting to relate my own piece to the excerpt above. What questions did I have prior to developing the piece? I was curious about the sounds that could be created if I were to amplify the situation of shaving my
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OLD COINS TURN TO GOLD DESIGN: Problem or Research Question: How does zinc effects the color change in a copper penny? Hypothesis: If copper and zinc comes together‚ then it will form brass‚ which gives gold color to copper penny. Variables: There were no variables at this experiment PROCEDURES: Materials: Zinc (SN) filling‚ 3M NaOH solution‚ Copper penny‚ tongs‚ Hot plate‚ 100 ml beaker‚ 250 ml beaker‚ Bunsen burner‚ Water‚ Spoon. Procedure: First‚ we turned on the hot plate.
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EXPERIMENT NO. 1 INTRODUCTION TO LAB INSTRUMENTS. 1. BREADBOARD We should be familiar to the following things about a breadboard: * What is a breadboard and what is it used for? * How does it work? * Setting Up. * Limitations. What is a breadboard and what is it used for? A breadboard (or protoboard) is usually a construction base for prototyping of electronics. The term "breadboard" is commonly used to refer to a solderless breadboard (plugboard). It was designed by
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