conclusion is that the higher salt concentration in the solution the greater the decrease in mass of the potato will be‚ the graph I have drawn supports my conclusion. The 10% salt concentration shows that on average the potato loses 2.6% of its overall mass. 20% salt concentration shows a further decrease in mass this time it is an average of 13% overall mass decrease. 30% salt concentration shows an average decrease of 18.8% in overall mass. The 0% salt concentration actually shows a mass increase
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Noel Arackal 1.25.16 Bisc 4930 Experiment No. 1 – Varying Extracellular Concentration Introduction: This experiment sets out to determine the tonicity of solutions with varying concentrations of sodium chloride on the red blood cells of sheep by measuring the transmittance of a red blood cell/NaCl solution with a spectrometer. This is done in order to study the effects of solutions containing varying levels of tonicity to red blood cells. Tonicity describes what happens to a cell when it is
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investigating how the rate of reaction differs when we change the concentration of Hydrochloric Acid whilst reacting with Magnesium. The rate of reaction is explained by the Collision Theory. This theory explains how various factors affect the reaction rates and how chemical reactions occur. The 4 factors of the Collision Theory are: • Temperature • Concentration • Surface area • Catalyst I am investigating how different concentrations of acids affect the rate of reaction. However I must control
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Bacterial Transformation Bacteria and plasmid to produce Red Fluorescent Proteins Alejandra Lopez
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No; the experiment was not successful‚ because it did not show the correct fluorescence gradation of the serial dilution of the DNA concentration. As shown by the picture‚ only the first drop of the DNA/EtBr mixture for the DNA standards fluoresce brightly under the UV light‚ while the other spots for both the DNA standards and the unknown DNA standards were all dimly fluoresce. This was due to pipetting error; the tip of the pipette did not touch the liquid (TE) in the micro-centrifuge‚ so no DNA
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There are numerous concentration camp that were constructed across Nazi Germany from 1939-1945. During this time period‚ Jews‚ gypsies‚ homosexuals‚ and bountiful of others forced by the Nazi regime to these concentration camps. There were countless experiments performed on those who were in certain camps‚ but mostly forced labor to build items for the German army. Of all of these camps one was the most notorious‚ which was Auschwitz concentration camps. This camp was the largest of its kind‚ but
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Minimum Inhibitory Concentration (MIC) is a way to measure the sensitivity of microbes to antibiotics or antifungals (antimicrobials). Organisms are tested for growth in various concentrations of antibiotic. This allows microbiologists to see which concentration (MIC) of antimicrobial will be effective against the pathogen. It also used for determining treatment for patients suffering from infections such as pneumonia‚ meningitis‚ endocarditis or osteomyelitis or managing the treatment of high-risk
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solution is common in an average household for it is used for cooking and cleaning. By definition‚ a titration is a technique where a solution of known concentration is used to determine the concentration of an unknown solution. Titrations are performed in chemistry‚ along with different manufacturing companies‚ to help determine the concentrations of acids and bases when they are unknown‚ when a neutralization reaction occurs. There are a couple important parts of a Titration that are imperative
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In “ Did the United States put its own citizens in concentration camps during WWII” the author writes about internment camps in the U.S. In the other article “ Concentration Camps 1933 - 1939” the author writes about Concentration Camps in Germany. Although those were two camps during WWII they still were very different in their people‚ places‚ and events. The first article included a number of people‚ places‚ and events. One group of people in particular were the Japanese ( 112‚00 of them). The
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Determining the unknown concentration of HCl via heat of neutralization of a reaction involving strong electrolytes and weak electrolytes. Myeongwon Lee 20522885 Partner: Frank Wong TA: Afsoon CHEM 120L – Earth Science & Chem 149 Section: 004 Tuesday‚ November 26th‚ 2013 Introduction All chemical changes are accompanied by change in energy and this energy is in form of heat. The energy change of a reaction that happens at constant pressure is defined as heat of reaction or enthalpy change and the
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