its absorbance in differently concentrated solutions. A spetrophotometer was used to measure the absorbance of the enzyme catecholase in different pH solutions as well as to measure the absorbance of catecholase in solutions with different concentrations of potato juice and phosphate buffers. Absorbance of the enzyme catecholase was at an optimum level when pH was close to neutral. When pH was acidic or basic‚ the catecholase was less effective. Also‚ when there was a higher concentration of potato
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Auschwitz was a concentration camp established in 1940 by the Nazis. The Nazis sent the Jews and other "undesirable" people here to be used as slaves or to be killed. It was located in Oswiecim‚ Poland. There was no privacy when the captives had to go to the washroom. Buckets and toilets were lined up in rows‚ and the toilets were often broken and flooded with urine and feces. Although the prisoners were exhausted due to hard work‚ sleeping was difficult because the bunks were made out of wood. The
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performed. By using 2-hydroxy-3‚5-dinitrobenzoic acid to oxidize the aldehyde group on the carbohydrate‚ the reducing end of glucose increases in absorbance of 540 nm. Using a UV spectrophotometer‚ the concentration was calculated by using a regression line of the standard curve. The experimental data concluded a 1068.912 µg/ml. With the actual concentration being 1200.000 µg/ml‚ a 10.924% error was deduced. Though the error is slightly high‚ the deviation of 134.370 µg/ml makes up for some of the
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Abstract: The purpose of this experiment was to determine the concentration of an unknown amount of copper sulfate using the spectronic 20. Four solutions of different concentrations of H₂O and CuSO₄ were put into the spectronic 20 to observe their absorption of light. Then‚ a graph was created to plot down the measurements. Using the calibration curve of the graph‚ the concentration of the unknown substance was found out to be .12M. Background/Introduction: Beer’s law (which states that
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anti-gerasone is what is significant. By speculating about what might happen or what a solution to their problems could be veers the essay away from the analytical focus. Avoid mechanical phrases and using the personal pronoun “I” Oftentimes‚ you can simply cross out the mechanical portion For example: In this essay I will discuss how in “The Concentration City” Ballard emphasizes the devolution of knowledge through a dystopic and overpopulated cityscape. First I will talk about the characterization
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The Spectrophotometer Determination Of Protein Concentrations And The Effects Sodium Dodecyl Sulphate And Triton X-100 Have On Protein Concentration. INTRODUCTION Spectroscopy is used as a collective term for all the analytical techniques based on the interaction of light and matter. Spectrophotometry is one of the branches of spectroscopy where we measure the absorption of light by molecules that are in a gas or vapour state or dissolved molecules/ions (Tombs‚ et.al‚ 1959). Spectroscopy is the
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is to find the concentration (mole/dm3 (M)) of solute in a potato cell by using the process of osmosis and different concentrations of sucrose solution. Background information Osmosis is diffusion of water across a partially permeable membrane. It moves from a solution with less solute concentration (high water potential) to a solution with more solute concentration (low water potential). The one with a high water concentration is called a hypotonic solution and the low water concentration is called
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Effects of Temperature‚ pH‚ Enzyme Concentration‚ and Substrate Concentration on Enzymatic Activity INTRODUCTION Enzymes‚ proteins that act as catalysts‚ are the most important type of protein[1]. Catalysts speed up chemical reactions and can go without being used up or changed [3] Without enzymes‚ the biochemical reactions that take place will react too slowly to keep up with the metabolic needs and the life functions of organisms. Catecholase is a reaction between oxygen and catechol
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Investigation to see How the Concentration of Hydrochloric acid affects the Rate of Reaction with Calcium Carbonate Rate This Paper: 1 2 3 4 5 Length: 3036 words (8.7 double-spaced pages) Rating: Red (FREE) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - An Investigation to see How the Concentration of Hydrochloric acid affects the Rate of Reaction with Calcium Carbonate I am going to investigate how concentration of hydrochloric acid affects
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Event When World War II began there were 9 million people in concentration camps‚ when the war ended there were 3 million people. When the Japanese attacked Pearl Harbor President Ford put the japanese americans and the immigrants into internment camps because they looked like the enemy‚ the Japanese were not able to fight in the Military because they looked like the enemy. When Hitler became Chancellor he chose to put the Jews in concentration camps because he thought they looked like the enemy‚ Hitler
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