06.03 Calorimetry: Lab Report Before You Begin: You may either copy and paste this document into a word processing program of your choice or print this page. Instructions: This is a two-part lab. Be sure to follow all steps given in the lab and complete all sections of the lab report before submitting to your instructor. Procedure: Part I: Determining the Specific Heat of a Known Metal 1. Place a plastic measuring trough on top of the digital balance‚ and press the "tare/on" button so that
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Post lab The unknown solution 4055 was tested by the separation scheme in order to identify the four cations that exist in it. The cations found were Ag+‚ Ba2+‚ Mn2+‚ and Ni2+. When I added 5 drops of 3M NaCl to the unknown solution‚ we had some precipitate‚ we centrifuge and then we divided to two test tubes‚ and they were put in hot water and got confirmatory tested. The Ag+ appeared to be in the solution because it melted‚ however Pb2+ didn’t. With the rest of the solution we added Na2SO4 we had
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nearest ±0.0001g. The experiment indicates some systematic errors with some of the equipment we used. For example‚ if we used more accurate thermometers the densities of the water and overall temperature of the water would become more accurate to the true temperature of the water‚ and decrease the percent error of the data. In my experiment‚ human error was very relevant. A systematic error also occurred in some of the readings because the water was still cooling down as the experiment went on causing
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Name of the Student:………………… Date:………….. What is the volume of 1 mole of hydrogen gas? One mole of any gas occupies the same volume when measured under the same conditions of temperature and pressure. In this experiment you will calculate the volume of 1 mole of hydrogen at room temperature and pressure. Intended lesson outcomes By the end of this practical you should be able to: • further develop skills in manipulating apparatus and accurate measurement; • use the mole concept; • calculate
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and the Vernier pH sensor was then hooked up and turned on to measure and graph the pH of the solution and the volume of NaOH. The Vernier pH sensor was then was placed in the solution and remained in the solution throughout the duration of the experiment. Then‚ the rate of the drip from the buret was then turned on to have a drip rate of
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Introduction The first law of thermodynamics states that the energy of the universe is constant. Heat is transferred when the atoms of one material vibrate and collide with the atoms of another material‚ thus transferring energy. For this reason‚ heats always travel from hot to cold objects and two objects will reach an equilibrium temperature. Materials and Methods 1. Oven 7. Test Tube 2. Pasco Temperature Probe 8. Stopper 3. Scale 9. Calorimeter 4. Samples of Metals
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Critique Revisiting the Stanford Prison Experiment: a Lesson in the Power of Situation January 17‚ 2012 � This is a critique of an article published in Chronicle of Higher Education‚ (v53 n30 pB6 Mar. 30‚ 2007) on "Revisiting the Stanford Prison Experiment: a Lesson in the Power of Situation" by Philip G. Zimbardo. This article discusses issues related to how good people can turn bad. SUMMARY In this article‚ Zimbardo looks at his previous social experiment on physical abuse in prison and discusses
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Experiment 3: Separating and Determining the Mass of Calcium Ion in a Calcium-Enriched Tablet In this lab‚ we dissolved a calcium-enriched tablet and participate the calcium ion as calcium carbonate. Our purpose is to determine the masses of calcium carbonate and calcium ion‚ to determine the mass percent of calcium ion in the tablet and to compare the masses and the percent with the listed tablet ingredients. This time we used a 150mL beaker‚ analytical balance‚ forceps‚ a 50mL graduated cylinder
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world suffering from a lack of it? Although not all water can be used for drinking purposes‚ in many places‚ water that is drinkable- is polluted or deluded by many agricultural and industrial motives and damage humans have caused (Friend). In this experiment‚ the goal is not to purify muddy water completely from microorganisms and bacteria‚ but to find the most efficient way to cleanse it from the dirt and soil particles that cause the murky color using physical
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1. The final yield of the cells can be determined by use of an automated cell counter or by use of a hemocytometer (Neubauer chamber). In our laboratory‚ we determine the number of purified cells in a Neubauer-improved‚ bright line chamber with V-slash with a depth of 0.1 mm and a counting area of 0.0025 mm2 from Marienfeld (Lauda Königshofen‚ Germany‚ PN # 0650030). 2. For determination of the final cell yield‚ mix a 10 µl aliquot of the purified cells (Figure 9D) with 10 µl of trypan blue solution
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