to determine the molarity of NaOH‚ we rinsed a burette with about 5ml of water and another 5ml of NaOH to prepare it for the experiment. We then measured exactly 25ml of the prepared KHP from the previous part into a 250ml Erlenmeyer flask and added 2 drops of the indicator‚ phenolphthalein. Next we filled the burette with the approximately 0.1 M NaOH so that our initial volume will be 0.0mls. We then started our titration by carefully pouring a little amount of the base into the prepared 25ml of
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DATA TABLE 2: Temperature Measurements Water Temperature (*C) Temperature (*F) Temperature (*K) Hot from tap 44*C 111.2*F 317.1*K Boiling 90*C 194*F 363.1*K Boling for 5 minutes 96*C 204.8*F 369.1*K Cold from tap 27*C 80.6*F 300.0*K Ice Water- 1 minute 11*C 51.8*F 284.1*K Ice Water- 5 minute 7*C 44.6*F 280.1*K DATA TABLE 3: Mass Measurements. Object Estimated Mass (g) Actual Mass (g) Actual mass (kg) Pen or Pencil 5g 5.3g .0053kg 3 Pennies 7.5g 8.1g .0081kg 1 Quarter 5.5g 5.7g .0057kg 2 Quarters
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Chapter 16 Notes The heart lies in the mediastinum and is surrounded by a doubled layered membrane called the pericardium. The outer most layer of the pericardium is called the fibrous pericardium‚ which anchors the heart to surrounding structures. The inner layer is called the serous pericardium and is composed of two layers. The outer portion is called the parietal pericardium‚ the inner portion is called the visceral pericardium (epicardium). Epicardium- outer most layer of the heart wall
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Amazon Warrior Women 1. Who were the Amazon Warrior Women? A group of Women warriors thought to have settled around the Black Sea. Who mated with vanquished foes and only kept the female children they bore. 2. Where are references to the Amazons found? The first account was found in Homer’s ILIAD‚ an account of the Trojan War. Greek historian Herodotus talked about a group of women warriors in his writing around 5th or 6th century B.C. 3. What evidence is there that the Amazons may have existed
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Microbiology Sec 147848 November 18‚ 2013 Title of the Experiment: Enterobacteriaceae Identification: The Enterotube II System Learning Objectives: After completing this exercise we were able to inoculate an unknown bacterium that belongs to the Enterobacteriaceae by using technology effectively with a Enterotube II. An Enterotube II is a miniaturized multi-test system for rapid identification of enterbacteriaceae. We then evaluated the test results and generated a five-digit code for the unknown
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Unit 2 Home Labs - KEY Goals: Read Safety Perform Changes: Physical or Chemical Lab Perform Special Physical Properties of Matter Lab Perform Paper Chromatography Lab Turn-in: 1) Changes: Physical or Chemical Lab - Completed Procedure / Observations‚ questions‚ and a written description of most important concept that you learned in the discussion section. 2) Special Physical Properties of Matter Lab – Completed Procedure / Observations‚ questions
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to break it down the cell will die‚ along with the organism itself. However with the aid of an enzyme‚ catalase‚ hydrogen peroxide is able to be broken down into an intermediate and thereafter harmless substances water and oxygen. The goal of this lab is to measure the reaction rate of this process in different substances such as a liver‚ a vegetable‚ and breast tissue. By using variables such a pH and temperature we are able to how the rate of reaction is altered or improved. If it has improved
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This lab will allows the comparison between elimination reactions under acidic and basic conditions through an analysis of two separate reactions: an acid-catalyzed dehydration of 1-butanol and 2-butanol using sulfuric acid and a dehydrobromination under basic conditions using potassium tert-butoxide of 1-bromobutane and 2-bromobutane. The products of all four reactions will be analyzed with gas chromatography‚ which separates organic compounds to see how each reaction’s product are formed under
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2 major lab accidents: 1) Adam and Joey‚ best friends since kindergarten‚ were doing an experiment in engineering class. The boys launched a potato at the wrong rate of speed and distance and broke a school window when they were trying out their potato launcher that was made to be launched indoors inside the school lab. If Adam and Joey had listened carefully to the teachers instructions‚ they would have launched the potato to travel the correct distance and speed. Maria and Kathy‚ two girls who
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Reminder: All post labs need to be 1- typed (not handwritten) ‚ 2- original (not copied from a classmate)‚ 3- answered using complete statements and 4- turned in at the beginning of the lab. Post-lab questions for Topic 5 – Enzymes Name: Date: Group: T W R Formation and Detection of Benzoquinone Table 1. Formation and Detection of Benzoquinone: Record Absorbance Time 2A-Potato extract + cathecol 2B- Potato extract + water 2C- Catechol + water After 10 min 1- What were the substrate
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