Procedure. 1) Accurately weigh approximately 2 g of the mix and dissolve it in 50 mL of diethyl ether. Be sure to dissolve the entire mix since it is not homogeneous. 2) Pour the solution into a separatory funnel. 3) To extract the nicotinamide from the mixture‚ add 5 mL of 5% HCl and shake gently. Draw off the lower aqueous layer into 125 mL Erlenmeyer flask and repeat the extraction with a second portion of HCl. Combine the three extracts and then set this mixture aside. 4) To separate the
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An Investigation on the rate of reaction of the enzyme Catalase on the substrate Hydrogen peroxide. Plan Aim: To investigate the rate of the effect of Catalase on hydrogen peroxide. Introduction This investigation will be carried out to investigate the rate of reaction of the enzyme catalase on the substrate hydrogen peroxide. Enzymes are biological catalysts‚ which speed up the rate of reaction without being used up during the reaction‚ which take place in living organisms. They do this by
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Speed of Decomposition and Its Factors Purpose The term decomposition is the process of breaking down dead organisms to reuse them. Decomposition allows nutrients in organisms to become free after they die or have become old and they are ready to be used by living plants and animals for their growth. Without decomposition useful nutrients would remain locked inside of a dead organism and it would be very difficult for new life to grow. Most of the nutrients that are essential for the plants
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Factors Affecting the rate of Hydrogen Peroxide degradation using Catalase Introduction An enzyme is a globular protein which functions as a catalyst that speeds up the rate of a reaction without being consumed in the reaction. An enzyme-catalyzed reaction occurs when a substance called the substrate binds onto the active site of the enzyme. This joining allows for a reduction in the activation energy and the reduction in activation energy helps the reaction to occur at a quicker rate. Enzyme
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In my coursework I will investigate about enzymes in potatoes reacting with Hydrogen Peroxide. In particular I will investigate the effects of changing the surface area of a potato when added to Hydrogen Peroxide. This is because‚ when increasing the surface area of the potatoes it will increase the rate of reaction because there will be more surface area on which particles from the potato and the Hydrogen Peroxide will collide on‚ and with more surface area there would be more particles carrying
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CBSE TEST PAPER-03 CLASS - X (Chemical Reactions and equations) 1. Take about 5 ml of dil. HCl in a test tube and add a few pieces of fine granules to it. Which gas is evolved? (a) Chlorine (b) Hydrogen (c) HCl (d) Nitrogen 2. Dissolving suger is an example of(a) Physical change (b) Chemical change (c) Redox Reaction (d) None of these. 3. Heat is evolved diving (a) Endothermic Reaction (b) Displacement Reaction (c) Combustion Reaction (d) Combination Reaction 4. Which of the following is not a balanced
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How different concentrations of hydrogen peroxide would affect the activity of catalase? 1. Variables Independent Concentration of hydrogen peroxide Dependent Volume of oxygen gas evolved Control Amount of liver used Location of liver sample obtained from the liver Type of liver used Possible enzymes transferred from hands during making liver homogenate Deterioration of liver Endpoint identification Volume of hydrogen peroxide added Reading on the syringe Room temperature
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there was an instruction manual to tell one how to be successful‚ how to overcome these hurdles. One of the most difficult hurdles facing people today is college. Often times people go into college with their eyes closed tightly‚ meaning they are totally unprepared for what lye’s ahead. There are a variety of aspects that determine whether students are successful in college. Meeting basic requirements to enter college‚ selecting the right courses‚ learning how to study on the college level‚ and managing
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Aim: To investigate the rate of thermal decomposition of CaCO3 at different temperatures. Research Question How does temperature influence the rate of thermal decomposition in CaCO3? Hypothesis Every time more heat is added to the element‚ CaCO3‚ thermal decomposition will take place faster because the heat is a catalyst which speeds up the reaction. Variables Dependent Variables → Mass of Calcium Carbonate Independent Variables → Temperature Controlled Variables → Calcium Carbonate
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College Students Taking Irrelevant Classes The number of international students enrolled in U.S. institutions has grown by 23 percent in the last five years. This is because the international community recognizes education in the U.S. All credit is given to University administrators who make sure that the courses students take are rigorous and prepares them for the real world ahead of them. The only problem is that Universities make students take some courses that are irrelevant to their major‚
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