Factors affecting the rate of reaction between a metal and an acid The rate of a reaction can be measured by the rate at which a reactant is used up‚ or the rate at which a product is formed. The temperature‚ concentration‚ pressure of reacting gases‚ surface area of reacting solids‚ and the use of catalysts‚ are all factors which affect the rate of a reaction. Individual properties of substances also affect reaction rates. The scope of these properties is broad and there are few generalizations
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The rate of reaction between sodium thiosulphate and hydrochloric acid Candidate name: Yeo Jin Kim (Kimberly Kim) Candidate number: 000791-021 Teacher: Yitao Duan 1.0 Aim The aim of this experiment is to investigate the changing of concentration effect the rate of reaction between sodium thiosulphate and hydrochloride. 2.1 Chemical Equation 2.0 Raw data 3.2 Qualitative Data 2.1.1 Before the experiment Substance | Color | State | Smell | Hydrochloride (HCl) | Colorless
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century medical scientists made a surprising discovery: that we are built not just of flesh and blood but also of time. They were able to demonstrate that we all have an internal "body clock" which regulates the rise and fall of our body energies‚ making us different from one day to the next. The idea of an internal "body clock" should not be surprising‚ since the lives of most living things are dominated by the 24-hour night-and-day cycle. The most obvious feature of this cycle is the way we feel tired
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graph‚ you can see that there is a relation between the rate of reaction and the surface area. The larger the surface are‚ the faster the rate of reaction seems to be. However‚ although the grain with the largest surface area (the smallest grain) reached the highest point within the shortest amount of time‚ its end result was still lower then the medium sized grain. The explanation for this result is relatively easy. The rate of a chemical reaction can be increased by increasing the size of the surface
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Determining the activation energy in the reaction between crystal violet and sodium hydroxide. I. DESIGN ASPECT 1: definition of the problem‚ hypothesis and selection of variables Problem: How the Arrhenius equation can be used to determine the activation energy in the reaction between crystal violet and sodium hydroxide. Objective: The objective of the experiment is to determine the activation energy. Knowing the rate constant k of reactions between crystal violet and sodium hydroxide at
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Introduction We are going to do an experiment to see how surface area effects the rate of reaction when added to hydrochloric acid. I will add calcium carbonate (marble chips) to hydrochloric acid. When calcium carbonate is added to hydrochloric acid a reaction takes place. The solution fizzes and gives off the gas carbon dioxide. I will collect this gas in a gas syringe and will time how long it takes for the reaction to produce 100cm3 of carbon dioxide. CaCO3 +2HCL Co2 +CaCl2 +H2O CalciumHydrochloricCarbonCalciumWater
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Company become the leading retailer‚ roaster and brand of specialty coffee and owned more than 5000 coffee shops all over the world. Why Starbucks can work so successfully? I will analyze Starbucks and its strategies with the ’Strategy Clock ’. The ’Strategy Clock ’ is based on the work of Bowman. It ’s a suitable way to analyze a company ’s competitive position in comparison to the offerings of competitors. As with Porter ’s Generic Strategies‚ Bowman considers competitive advantage in relation
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The Worst Day The alarm clock rang. I slowly turned over to look at the clock‚ 7:35. What 7:35! I jumped out of bed as fast as I could. How long was it going off for? Why did I not wake up? I had so many questions going through my head‚ but I only had 10 minutes to hurry up and get ready. Hair‚ teeth‚ makeup‚ and soccer gear that’s everything I thought to myself. At the exact moment I heard the loud squealing of the buses brakes. I took off running as fast as I could through the neighbor’s yard
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An experiment to investigate the effect of temperature on the rate of reaction of the Enzyme Trypsin. Aim: This investigation was on the effect temperature has on the rate that the enzyme trypsin hydrolyses its substrate‚ a protein found in milk (casein). This investigation was conducted under controlled conditions‚ the temperature being the changeable variable. Trypsin and its substrate (powdered milk which is a source of the protein casein) were heated in a water bath. The contents of the two
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Assessment of Twelve O’ Clock High- Reflection Assignment #4 The movie Twelve O’ Clock High illustrated various aspects of leadership approaches in an Air Force general’s strenuous attempt to heighten the morale of the 918th Bomb Group. Twelve O’ Clock High highlighted the effects of country-club management under the leadership of Col Keith Davenport and revealed the effects of authority-compliance leadership under the command of Brig Gen Frank Savage. Twelve O’ Clock High highlights two Air
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