Reaction Rate Coursework Aim To see how the concentration of a reactant affects the rate of reaction‚ in this case sodium thiosulphate and acid. Scientific Background For a reaction to occur‚ the particles of the reactants must be colliding with each other with enough energy‚ the amount of energy needed for the reaction is called activation energy. Activation energy is altered by temperature‚ concentration‚ surface area of and the pressure on the reactants. Stirring the reactants also increases
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ON THE RATE OF REACTION Aim To study the effect that temperature and concentration of iodide ion solution have on the rate of iodide ion I⁻ oxidation by peroxodisulphate ion S₂O₈⁻‚ creating an iodine clock reaction. Introduction I decided to choose as the topic for my investigation the rate of reaction for its vital importance in the human body. Indeed I am really interested in Biology and especially physiology and I would like to study medicine. The rate at which different reactions happens in the
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SELECTED REDOX REACTIONS RESULTS AND DISCUSSION Oxidation-Reduction reaction also known as redox reaction is a process in which there’s a net movement of electrons between reacting species. These types of reactions involve two separate elementary reactions: one that loses electrons and another that gains the electrons that was lost. Gaining of electrons is referred to as Reduction reaction (the species that undergoes reduction is called as oxidizing agent) while losing of electrons is called
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Three Branches Research Paper There are three different branches in the American government. The three branches are the legislative branch‚ executive branch‚ and judicial branch. The branches do a lot of things and are made up of a lot of individual groups. Each branch has its own role they have to accomplish to carry out the functions of the government. The executive‚ judicial‚ and legislative branches are not independent. When the constitution was written‚ it included checks and balances. This
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the three describers exercise (introductions‚ icebreaker‚ johari mutual awareness‚ team dynamics‚ team development) This is a long explanation for actually a very simple activity. The game is for groups of up to twenty people‚ or more provided they know each other. Equipment and set up: • Split the group into equal teams of three or four people. • Teams of five or six are okay although will require firm time control. Teams of seven or more are not recommended. • Issue
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Introduction Nivaldo J. Tro describes kinetics as the study of how changes that occur in chemical reactions take place over time‚ and because of its vast utilization in a multitude of industries‚ it may be one of the most significant and fascinating aspects in the entire chemical world. One application of the study of kinetics can be applied to the determination of the rate of a chemical reaction involving a certain selection of chemicals (FD&C Blue #1 and sodium hypochlorite). The purpose of the
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consists of three steps: • Denaturation: Samples of DNA with the target sequence are heated to a reaction temperature of 94-96˚ C that causes DNA melting of the DNA template without denaturing the enzyme by disrupting the hydrogen bonds between complementary bases of the double helical DNA‚ yielding single-stranded DNA molecules(“How Is PCR (polymerase Chain Reaction) Done?”). DNA polymerase does not get degraded in such high temperatures since the DNA polymerase used in this reaction is thermostable
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Three generations Scene 1: Dining room Narrator: the elder monzon was waiting for his wife to speak. He had finished breakfast and had just laid down the newspaper through which he had been glancing. Across the table‚ his wife played absently with a spoon. Her brows were knitted‚ but a half smile kept twitching on her lips. She was handsome‚ well-preserved woman and her husband was thinking‚ a great deal more clever than she allowed herself to appear. Doña Sofia: it is about chitong. He doesn’t
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Bags of Reactions * Problem/Purpose * Background Information: The Law of Conservation of Mass was created by Antoine Lavoisier in the 18th century. This law stated that mass could matter could neither be created nor destroyed. During a reaction the bonds of the reactants are broken and form new substances. As stated in the Law of Conservation‚ matter can neither be created nor destroyed; because of this the products should have the same number and type of atoms as seen in the reactants
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flask with an iodine crystal with a bromobenzene solution with a stir bar. Once the stirring began‚ the solution turned brown and over time began to lighten up. The color change to brown indicated that the reaction began and this is why an iodine crystal was placed in the solution. The reaction started to boil due to its own reflux so heat didn’t need to be applied. Next the anhydrous ether solution was added very slowly in a dropwise manner with a needle through the septum cap on the condenser. This
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