10.2 Determining the Concentration of Ammonia in Window Cleaner Solution Design (D) Aim To determine the concentration of ammonia‚ NH3‚ in the commercial window cleaner solution Background Window cleaner contains ammonia‚ NH3‚ a weak base‚ which helps remove dirt from glassware. The concentration of ammonia in the window cleaner solution varies by brands. Titrating the window cleaner solution with an acid of known concentration allows us to calculate the concentration of the ammonia in that
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Effects of Drugs A Term Paper Presented to the Faculty Of the English Department Of Hope Christian High School By: Aldrin Aaron M. Agulan High 4 - Purity February 27 2013 Table of contents……… Acknowledgement……………………………..…. Introduction …..………………………………..…….1 Definition of terms …………………………….…....2 Effects of Drugs ...……….……………………..….3 Complication of addiction ....……….………………14 Conclusion …………………………………………15 Findings ……………………
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The effects of caffeine on the heart rates of Daphnia. Introduction In the water flea‚ Daphnia‚ the single‚ small heart is easily visible when viewed under a low power microscope. The heart rate can be monitored and measured in different conditions‚ such as change in water temperature‚ or in this case‚ the concentration of chemicals added to the water they habitat. A change in daphnia heart rate under the influence of a concentration of caffeine solution creates a procedure providing an interesting
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The Effects of Various Environmental Conditions on the Rate of an Enzyme Catalyzed Reaction Olivia Payne Mr. Kuninsky 10/10/14 Variables: 1. Substrate Concentration 2. Substrate volume 3. Temperature 4. Enzyme Volume 5. Enzyme Concentration 6. pH The independent variable my group addressed was temperature The conditions for temperature were 5°C‚ 24°C‚ 35°C‚ and 45°C We measured the independent variable using thermometers The dependent variable was the rate of an enzyme catalyzed reaction The
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The effects of caffeine‚ alcohol and environment on Daphnia Magna. ABSTRACT In this experiment daphnia magna a semitransparent fresh water crustacean‚ are used to study the effects of water‚ alcohol and caffeine on heart rate. Daphnia was placed on a clean deep well slide. This was placed under the microscope and brought into focus on the best objective and light contrast. The heart rate was observed and counted within 15seconds and recorded on a table. Introduction Daphnia magna
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Lab #6: pH Effects and Enzyme Concentration on Catecholase Activity Abstract: This experiment examined the effect on how the changes in pH balance of potato juice affected the enzyme activity‚ structural stability and solubility. Introduction: Enzymes are macromolecules that allow chemical reactions to occur. They function as biological catalysts. A catalyst is a substance that is involved in‚ but not changed by or consumed in‚ a chemical reaction. The amount of energy required for a reaction
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extermination camps‚ labour camps and prisoner of war camps. The effects of these camps can be situated into two categories‚ long term and short term effects. The short term effect was in the moment and when Nazi Germany was in control. The long term affect
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GREENHOUSE EFFECTS IntroductionThe greenhouse effect is a process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases‚ and is re-radiated in all directions. Since part of this re-radiation is back towards the surface and the lower atmosphere‚ it results in an elevation of the average surface temperature above what it would be in the absence of the gases.[1][2] Solar radiation at the frequencies of visible light largely passes through the atmosphere to
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The Effects of Stress on the Mind and Body For many people‚ stress is so common that it becomes a way of life. The hassles and frustrations of life can lead to a stress overload. Stress isn’t always a bad thing. In small amounts‚ it can help you. Stress helps with concentration and motivation for one to do their best‚ especially while under pressure. Stress is a normal‚ physical response to circumstances that upset your balance or make you feel vulnerable or threatened. When you sense any degree
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During World War two‚ the nazis captured and imprisoned many people who did not fit into their desired Aryan race or disagreed with their beliefs. During the prisoner’s time alive in concentration camps‚ some were subjected to horrific experiments. Many of them either died or were left disfigured due to these events. Many of the tests were to benefit the lives of Nazi soldiers. However‚ some doctors performed the test without a proper reason behind it. An example of how the Nazis felt about the Jews
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