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EFFECT OF CONCENTRATION ON REACTION RATE The aim of this experiment is to find the effect of varying the concentration of iodide ions on the rate of reaction between hydrogen peroxide and an acidified solution of potassium iodide: H2O2(aq) + 2H+(aq) + 2I⁻ → 2H2O(l) + I2(aq) The course of this reaction can be followed by carrying it out in the presence of small quantities of starch and sodium thiosulfate solutions. As the iodine molecules are produced they immediately react with the thiosulfate
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the kinds of TV shows are many more than before. However‚ the authorities make some regulations on TV shows‚ such as‚ not allowing some kinds of TV shows to play at everyday. From my personal angle‚ I believe that the policy is not reasonable. First of all‚ TV shows play an important role in people’s daily lives. Trough watching TV shows with friends‚ we can have good communication with friends. I think this is a good idea for advancing the relationship of friends. Because of TV shows‚ friends
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economic‚ political‚ and social change. The emergence of technology and resulting societal transformation inspired art movements that reevaluated the perception of and around art and artists. One essential product of the Industrial Revolution was the invention of the camera. Through analysis of its effect‚ we can timeline the way the camera and new technological processes affected the perception of value in art originals vs reproductions. The imperative issue for industrial age work was that of originality
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In the first part of this lab‚ E.coli cells were transformed with an R-plasmid carrying a tetracycline resistant gene‚ giving rise to tetracycline resistant E.coli strain. This was accomplished through transformation‚ which allowed E.coli to directly uptake the naked DNA molecule carrying the antibiotic resistant gene (1). However‚ in order to take up the DNA and incorporate them into their genome via recombination‚ cells must be competent (1). Therefore‚ E.coli cells which are not competent under
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This experiment was a Landolt Iodine clock reaction - Oxidation of Bisulphite by Iodate. It involved conducting three measured experiments. The first variable tested was concencentration. This was tested by conducting two experiments‚ each varying the concentration of either the NaHSO3 or KIO3. The varying of NaHSO3 involved using 0.1 Molar of KIO3 against decreasing concentrations of NaHSO3 (0.25 M‚ 0.125 M‚ 0.0625 M and 0.03125 M). When decreasing the concentration of KIO3‚ 0.25 M of NaHSO3 was
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Fuzzy Control of Inverted Pendulum Based on Differential Evolution Abstract: Fuzzy control is an efficient method for the control of nonlinear‚ uncertain plants. Although satisfactory performance can be achieved with the fuzzy control method‚ its performance can still be improved‚ if some optimization algorithms are used to tune some of its parameters. In this paper‚ we testify the performance of the fuzzy logic for the inverted pendulum system and utilize the Differential Evolution algorithm to
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Some countries in the world use a 24 hour clock. In other words‚ instead of saying 3 a.m. and 3 p.m. to distinguish between morning and afternoon times‚ they say 0300 and 1500. In many countries‚ this is the standard and is called the 24 hour clock. In a few countries‚ like the U.S.‚ a 12 hour clock is the standard default for the general population‚ but certain sub-populations‚ such as the military‚ use the 24 hour clock. In those countries‚ this is often referred to as military time. For the
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of 16‚ Ford decided to leave home and head to the city of Detroit. There‚ he was an apprentice to a machinist. In 1888‚ Ford would marry his wife‚ Clara Bryant. Henry Ford would go on to be one of the most successful designers of his time. His invention of the Model T was one that advanced the world to new levels. Also known as the Tin Lizzie‚ the Model T made transportation a much simpler process. Demand for the Model T skyrocketed as it grew more popular every day. As a result‚ Ford created the
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Movies have been around since Thomas Edison’s invention of the Kinetoscope in 1894. The Kinetoscope‚ or peep show‚ was a tall‚ wooden box that allowed a person to look inside and see moving images. Viewing images was made possible by the film moving past a shutter over a light source. The Kinetoscope‚ however‚ had a two major flaws: the images viewed were jerky and didn’t move smoothly‚ and the viewing time for one show was only twenty seconds. Improvements to the Kinetoscope allowed it to hold more
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