fixed exchange rate system that fixes the exchange rate of Hong Kong Dollar and United State Dollar to a ratio of 7.8: 1 Hong Kong Monetary Authority does not need to stable exchange market by controlling the supply and demand of HKD. It can be stabilized by Fixed-linkage System. In the past 15 years‚ Hong Kong interest rates and exchange rates fluctuated in the same trend of the US interest rate and exchange rate. The graphs below show an example of interest rate and exchange rate respectively:
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2013 Some Factors that Affect the Rate of a Reaction BACKGROUND: Chemical reactions occur at different rates. In this experiment I will consider some of the key factors that influence the rate of a reaction: * nature of reactants - particle size * temperature * catalysts According to the collision theory‚ the rate of a reaction depends on the frequency of collisions between reacting particles. The more frequent the collisions‚ the faster the rate of the reaction. However
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Mashrek International School Investigate the Factors that Affect the Rate of Respiration in Yeast. (Temperature) Fawzi El Ansari Biology HL Title: Investigate the Factors that Affect the Rate of Respiration in Yeast. (Temperature) Aim: The aim of this experiment is to investigate the effect of changing the temperature on the rate of respiration in yeast. This will be done by placing equal amounts of yeast in each beaker that contains the same pH solution. Each beaker will be mixed with glucose
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Osmosis Experiment Subject: Professor Egg-avier Duration: 3 weeks (Oct 2nd – Oct 16th) Week 1 On October 2nd my group was giving a raw egg (weighing 58.8 grams) and placed it into a clear mason jar with 200mL of vinegar. The ph levels of our vinegar equaled a 2 which tells us that vinegar is a fairly acidic liquid. Once submerged in the vinegar‚ little bubbles began to appear around the egg’s shell. We believed this to be carbon dioxide escaping from the shell. We left our egg to sit in the
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Does Music Affect Teens? Can the Music Youth Listen to Affect Their Behavior? Music is often blamed for influencing particular behaviors‚ but does it really do so? Why is music sometimes associated with negative behavior and actions? With music being such a staple in youth culture‚ it seems that each teenager has a “soundtrack to their life.” But‚ are they just innocently listening to their favorite tunes? Or are they in for something more? In the media it seems that certain groups that
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the following formulae: Average change in weight/weight at start times 100 The graph slopes downwards. This means that the percentage gain and loss in weight and concentration are not directly proportional because the line is not straight and does not pass through the origin. However‚ there is a pattern on my graph‚ and this is‚ as the concentration of the solution increases‚ the percentage change in weight decreases. From the line of best fit that has been added in‚ it can be seen that
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anyone ever thought of what they actually do to you? The experiment that will be conducted will answer this question: How does playing video games affect your heart rate? If playing video games causes your heart to beat faster‚ then they can help someone who has an abnormally slow heart rate. This experiment may help people with heart rate problems to increase/decrease their heart rate. (whatever the results of the tests are). A lot of people think that video games are bad for you‚ but this experiment
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shows the higher the concentration of salt the higher the drop in mass. This happened because the potato slices in the 0% and 5% salt concentration became turgid which means it had swollen and became hard. This occurred because of the process called osmosis in which plant cells take up water and they start to swell‚ but the cell wall prevents them from bursting. Evaluation In my opinion the experiment was very successful‚ went according to plan and produced a lot of good results. The timing‚ weighing
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(3-6 pm) OSMOSIS LAB REPORT INTRODUCTION Osmosis is a special type of diffusion where water molecules move down a concentration gradient across a cell membrane. The solute (dissolved substance) concentration affects the rate of osmosis causing it either to speed the process up or slow it down. Based on this‚ how does different concentrations of sucrose affect the rate of osmosis? If sucrose concentration increases in the selectivity-permeable baggies‚ then the rate of osmosis will increase
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INTERNATIONAL BACCALAUREATE BIOLOGY INTERNAL ASSESMENT DATA COLLECTION AND PROCESSING CONCLUSION AND EVALUATION RELATIONSHIP BETWEEN SURFACE AREA AND THE VOLUME OF A CELL‚ HOW IT AFFECTS THE RATE OF DIFFUSION Nazirul Ibrahim 04.10.2011 DATA COLLECTION AND PROCESSING We have determined the following variables: * dV- the time for the color indicator phenolphthalein to reach the center of the cube (diffusion) * iV- the size of the cube * cV- the amount of Sodium
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