Reetika Kashyap September 20th‚ 2012 Enzyme Lab What is an enzyme? Enzymes are specialized protein molecules simplifying most of the body’s metabolic processes such as‚ supplying energy‚ digesting foods‚ purifying your blood‚ executing the body of waste products etc. Enzymes act as catalyst by speeding up the reactions that happen in our bodies and decreasing the amount of activation energy needed to break a complex down. A reactant is any given enzymatic reaction is called a substrate for that
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The Role of the S.S. in the Holocaust All along people have said that Hitler did the Holocaust. This statement is not entirely true‚ and it was his soldiers did. They marched under the Nazi orders‚ and exterminated men‚ women‚ and children alike. The SS started out with humble beginnings. They were founded and started by Adolf Hitler himself. They were started with no intent to harm or kill‚ but to protect Hitler and his fellow party members. They had 300 members in the beginning. They
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mass of the amount of unknown acid X measured in grams (±0.001g) Table 2: Table of reading of the burette initially filled with 25mL of 0.201moldm-3 sodium hydroxide (NaOH) to titrate 25mL (±0.03mL) of unknown acid X in mL (±0.05mL) after each titre. Reading on the burette initially filled with 25mL of 0.201moldm-3 NaOH (±0.05mL) First titre 21.3 Second titre 18.2 Third titre 15.2 Fourth titre 12.0 Qualitative data Observations: When dissolving the acid X in the water‚ most of
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Law 12 2012/2013 Criminal Quiz Summary Notes CRIMINAL LAW I know it’s illegal‚ but is it a crime? Many things are illegal: jay-walking‚ speeding‚ or setting up a clothes line outside to dry your laundry (in West Vancouver)‚ but they aren’t necessarily crimes. What then makes something a crime? Criminal Law Criminal law deals with offences committed against society (often these appear to be against individuals). The purpose of criminal law is to keep order in society and deter the committing
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Experiment: Observations of Chemical and Physical Changes Derrick Davis Lab partner: None Location: My house Date Performed 25 Feb 15; 1600 CHE111-CO2 Photo 1 (Photo of me properly wearing safety goggles holding the student information card) Abstract: In chemistry it is important to understand the difference between physical and chemical changes. The objective of this experiment was to perform tests using heat or chemical mediators and observe the results for any physical or chemical changes
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a strong base. The titrant reacts with and consumes the acid via a neutralization reaction. The point at which stoichiometric amounts of the acid and base have combined is the equivalence point. An example of this is shown in the equation: HCl(aq)+NaOH(aq)NaCl(aq)+H2O(l). The number of moles is given by knowing the exact concentration and volume added of the titrant. The latter‚ in turn‚ is related by stoichiometry to the number of moles of acid initially present in the unknown. To detect the equivalence
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Post lab The unknown solution 4055 was tested by the separation scheme in order to identify the four cations that exist in it. The cations found were Ag+‚ Ba2+‚ Mn2+‚ and Ni2+. When I added 5 drops of 3M NaCl to the unknown solution‚ we had some precipitate‚ we centrifuge and then we divided to two test tubes‚ and they were put in hot water and got confirmatory tested. The Ag+ appeared to be in the solution because it melted‚ however Pb2+ didn’t. With the rest of the solution we added Na2SO4 we had
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copper penny. Variables: There were no variables at this experiment PROCEDURES: Materials: Zinc (SN) filling‚ 3M NaOH solution‚ Copper penny‚ tongs‚ Hot plate‚ 100 ml beaker‚ 250 ml beaker‚ Bunsen burner‚ Water‚ Spoon. Procedure: First‚ we turned on the hot plate. Then‚ we filled 250 ml beaker with 125 ml of water. We put half a spoon of zinc fillings. We add 20 ml of 3M NaOH solutions in it. We placed the beaker on the hot plate‚ which we had turned on before. We put the penny into the
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(JUNE)‚ Spring 2011‚ 9(2):A71-A74 An Undergraduate Laboratory Exercise to Study Weber’s Law Jameson K. Holden‚ Eric M. Francisco‚ Zheng Zhang‚ Cristina Baric & Mark Tommerdahl Biomedical Engineering Department‚ University of North Carolina‚ Chapel Hill‚ NC 27599. Weber’s Law describes the relationship between actual and perceived differences in stimulus intensity. To observe the relationship described in this law‚ we developed an exercise for undergraduate students‚ as experiential learning is an integral
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Abstract For the amount of aspirin in a commercial tablet to be determined‚ different solutions of acetylsalicylic acid mixed with NaOH were created at different concentrations. All the different solutions were then analysed using Novaspec photometer‚ which allowed for a graph to be created and a line of best fit to be made. The amount of aspirin in a commercial tablet was found to be 350mg. Introduction The molecular formula for aspirin‚ also known as acetylsalicylic acid‚ is C9H8O4. It is most
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