Introduction In this chemical reaction‚ the magnesium will dissolve in the hydrochloric acid to produce hydrogen gas. This is because magnesium is higher than hydrogen in the reactivity series. Therefore‚ when the two reactants are combined‚ a displacement reaction occus and the magnesium displaces the hydrogen‚ forming magnesium chloride and hydrogen gas. Mg (s) + 2HCl (aq) -> MgCl 2 (aq) + H 2 (g) Magnesium + Hydrochloric acid -> Magnesium Chloride + Hydrogen
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on the rate of the iodine clock reaction using ammonium persulfate Assessment criteria: Design Variables: Table 1.1: List of dependent and independent variables. S.No | Dependent variables | Independent variables | Controlled variables | 1. | Rate of reaction | Temperature | Concentration | 2. | - | - | Pressure | 3. | - | - | Volume | Hypothesis: The iodine clock reaction is an experiment that demonstrates
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Lambda DNA Amplification by Polymerase Chain Reaction (PCR) Introduction/ Background* Since its introduction in 1985‚ polymerase chain reaction (PCR) has become a powerful tool in molecular genetic analysis. Today‚ it is used for applications such as cloning‚ analysis of DNA from ancient specimens‚ and analysis of human DNA for forensic applications. PCR is a test-tube DNA replication system for making many‚ many copies of‚ or amplifying‚ a defined segment of DNA. Using PCR‚ a selected target
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School of Chemistry @ Pietermaritzburg University of KwaZulu Natal Chemistry 310 Substitution reaction of Molybdenum Hexacarbonyl: the use of infrared spectroscopy as a structural tool in metal carbonyl chemistry. Abstract The synthesis of isomer A and B of [Mo(CO)4(PPh3)2] were prepared from molybdenum hexacarbonyl‚ sodium borohydride and triphenylphosphine with a % yield of 79% and 8.5% respectively. Two isomer was identified using IR spectra and from isomer A four C≡O stretching
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woman wear freely. My mother having to adjust to a completely different environment affected her in similar ways as other cultures affected civilization in certain pieces of fiction. In the novel Things Fall Apart‚ by Chinua Achebe‚ and the film Chocolat‚ directed by Lasse Hallstrom‚ the influences of new culture on an existing society shows that actions carry consequences. In both pieces‚ each society experiences a similar influence caused by new cultures. When these new cultures present themselves
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experiences the Puritan life. In Chocolat‚ written by Joanne Harris‚ you are placed in the middle of France around the 1960’s during lent. Both of these stories have similar women characters in them. In the communities that they live in‚ the town’s people have a problem with them. Both Hester and Vianne have committed sins and must find a way to live with their own guilt and the judgmental opinions of the people. Although Hester is in Scarlet Letter and Vianne is in Chocolat‚ they both show determination
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Investigating the Kinetics of the reaction between Iodide ions and Peroxodisulphate (VI) ions By the use of an Iodine clock reaction I hope to obtain the length of time taken for Iodine ions (in potassium iodide) to react fully with Peroxodisulphate ions (in potassium Peroxodisulphate). I will do three sets of experiments changing first the concentration of iodide ions‚ then the concentration of Peroxodisulphate ions and finally the temperature of the solution in which the reaction is taking place. From these
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Summer Reading Project: Chocolat Literary Terms 1. Simile: a figure of speech in which two essentially unlike things are explicitly compared‚ usually by means of like or as Example- Her eyes are like the midnight sky just as they were sparkling. 2. Metaphor: a figure of speech in which a word or phrase that designates one thing is applied to another in another in an implicit comparison Example- Life is a journey; choose the right path. 3. Style: the way in which something is said‚ done
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Isolated DNA Products Amplified Via Polymerase Chain Reaction and Cloned Biotechnology: DNA WPUNJ December‚ 2012 Abstract Isolated DNA from mouse‚ plants‚ and plasmid DNA were used for Polymerase Chain Reaction (PCR) for DNA amplification. The purpose of this experiment was to study the success rate or optimization of PCR of DNA‚ using both manual and kit methods. This set of experiments gives an insight to the relative difficulties associated with the optimization of a variety
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Enzymes are proteins which serve to reduce the activation energy required for biological reactions (Russell and others 2010). This allows biologically important chemical reactions to occur rapidly enough to allow cells to carry out their life processes (Russell and others 2010). Enzymes are made of one or more polypeptide strands‚ which individually or as an associated complex take on a three-dimensional shape. When properly associated‚ these shapes form the active site and other supporting structures
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