Given the evidence‚ it can be determined that a reaction will occur when reactants have a kinetic energy greater than the activation energy‚ this is a theory of collision theory. For example‚ in the first experiment‚ the test tube filled with 10 mL of 3% hydrogen peroxide and had scoop of manganese dioxide‚ had a greater reaction than the other test tube. Which simply contained 10 mL of 3% hydrogen peroxide. The factor that affected the reaction rate was that the manganese was seen as a catalyst.
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increase the reaction rate. This will result in the particles colliding more frequently and increasing the speed of the reaction. Also when they have more energy there will be more chance of the collisions being successful because the activation energy will be attainable. Hypothesis: In a reaction between calcium carbonate and hydrochloric acid‚ the products calcium chloride‚ carbon dioxide and water are formed. I predict that the higher temperature of HCl acid‚ the higher the reaction rate will be
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PENDULUM INVESTIGATION Aim of the investigation The aim of the pendulum investigation is to see what will happen if I change a variable whilst I swing a pendulum and see the effect which it has on the pendulums time to complete one whole swing (from where it starts‚ to the opposite end‚ and back again). This will give me an insight into what will effect the time of the swinging of the pendulum‚ be it weight‚ string length‚ the angle‚ or the swinging point. Planning my investigation I will
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Interpretation of Data When looking at my results i can safely say that the change in HCl concentration does affect the rate of reaction with the Calcium carbonate pebbles. The relationship between the change in HCl and reaction rate can be seen in the graph and raw data table presented above. If you compare the lowest concentration with the highest concentration you’d be able to see that there is a very large contrast between their averages. The average gas production of 0.1M HCl was 0.00693 kPa/s
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Death is an unavoidable occurrence in life‚ but the forms vary in the way that people may describe a death or may be a feeling of what might feel like death. Both W.H. Auden who wrote the poem Stop all the Clocks and Gwen Harwood who wrote the poem Barn Owl have both shown the idea of death in their poems. In the first part of the poem Barn Owl a child at a rebellious age‚ experiments with the constraints of authority in an attempt to seek control for herself‚ as the child sneaks out to kill a
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Audit & Investigation AQ002-3.5-2-AINV-T 15-Jun-12 WASEED AHMED LECTURER: MR. MEGAT ABDULLAH MEGAT MAHMUD Table of Contents Different roles of internal and external auditors. 4 Internal auditors: 4 External auditors: 4 Identify the benefits in forming an audit committee. 6 Evaluate the strengths and weaknesses of MPL’s control environment: 7 Control Environment: 7 a. Integrity and Ethical Values:
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Week 5 Individual Work Stacy Grice Everest University CJE 1600-12 Criminal Investigations Professor Stevie Hayes August 16‚ 2013 There is a big difference between an interview and an interrogation. The main purpose of an interview is to obtain information and should be done in a location where the person being interviewed is mentally and emotionally relaxed. Most of the time someone would be interviewed in their home or a park‚ where they would feel relaxed. Most of the time you interview
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Hypothesis: If I increase the concentration of NaOH from 0.5M to 1M‚ then I will see the temperature slope increase in the reaction with an increased concentration because with an increase of moles‚ the particles will be colliding more often‚ therefore increasing the probability that the proper energy and alignment will occur to create more collisions in the same amount of time. Methods: List of Materials: • 110 mL of NaOH at 1 M (10 mL per run) • 110 mL of NaOH at 0.5 M (10 mL per run) • 220 mL
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The Circadian clock generates physiological and behavioral rhythms with a period roughly 24 hours. It is thought that Circadian dysfunctions underlie the pathogenesis of many psychiatric disorders such as mania-like behavior and bipolar disorder (McClung‚ 2013). Attention Deficit Hyperactivity Disorder (ADHD) is one of the most widespread psychiatric disorders in humans. Somewhere between 3 and 5% of the population is affected by ADHD (Geissler and Lesch‚ 2011). The ADHD phenotype is characterized
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into the movie to make it well done on so many scales. There are lots of forms of film elements used and shown throughout the movie‚ but one particular symbol focuses on is the use of clocks and how it helps shape the movie and the idea Chbosky is trying to get across. The scenes throughout the movie subtly have clocks placed and certain times being announced in the film to insure the idea that although time may seem to drag on forever‚ time also goes by extremely fast. For Charlie‚ the main character
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