dioxide | Weight before 120.3 g | Part C | Zinc with Hydrochloric acidIt bubbled up like it was boiling and produced hydrogen gas. | Zinc weight- 1.5 | Part D | It took a little while of just clear then turned into a Carolina blue precipitate | | Part E | Zinc turned fire red (The copper was already red)Liquid turned a tar heel blueWarm on the bottom | | Part F | H2O2 Hydrogen proxide KI |
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ESTIMATION OF MAJOR TISSUE CATALASE ACTIVITY OF DDVP-TREATED PALM WEEVIL (RYNCHOPHORUS PHOENICIS) LARVA BY ADEWUMI‚ SEGUN JOHN BCH/07/1313 IN PARTIAL FULFILMENT FOR THE AWARD OF BACHELORS IN TECHNOLOGY (B. TECH.) IN APPLIED BIOCHEMISTRY IN THE DEPARTMENT OF BIOCHEMSISTRY‚ FEDERAL UNIVERISTY OF TECHNOLOGY‚ AKURE‚ ONDO STATE OCTOBER‚ 2012 CERTIFICATION This is to certify that this project work was carried out by Adewumi Segun John‚ with matriculation number BCH/07/1313‚ student of the Department
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Main factors affect the refined oil yield: 1‚ the alkali refining loss (1) for removal of colloid in hair oil‚ free fatty acid‚ moisture‚ impurities and other form of loss; (2) in the process caused by the loss of neutral oil saponification‚ emulsification; (3) theoretical calculation formula: alkali refining losses = 0.2 + 1.25 x (FFA % % + water + phosphatide content % % + 0.3% + impurities) 2‚ decoloring loss mainly for adsorption bleaching waste clay in oil absorption caused by the loss
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ST ANDREW’S JUNIOR COLLEGE JC 2 Preliminary Examination CHEMISTRY 9647/03 Higher 2 13 September 2010 Paper 3 Free Response 2 hours Candidates answer on separate paper. Additional Materials: Answer paper‚ Graph Paper‚ Data Booklet READ THESE INSTRUCTIONS FIRST Write your name and civics group on all the work you hand in. Write in dark blue or black pen on both sides of the paper. You may use a soft pencil for any diagrams‚ graphs or rough working. Do not use staples‚
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decomposes hydrogen peroxide into water and oxygen. Also catalase positive. Enterococcus faecalis doesn’t show produce bubbles in addition of H2O2 which means it doesn’t produce oxygen and is catalase negative. Conclusion/Interpretation: Bubbles appeared after placing H2O2 shows positive reaction to the catalase enzyme. Depending on the strength of the reaction‚ the bubbles may be tiny or relatively large. The primary reaction catalyzed by catalase is the decomposition of hydrogen peroxide to form
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Metals | Reaction with oxygen | Reaction with water | Reaction with steam | Reaction with dilute acid | Reduction of oxides by carbon / carbon monoxide | Reduction of oxides by hydrogen | K | Forms oxides and peroxides | Violent‚ metal darts on surface of water‚ hissing sound‚ sparks formed; Metal hydroxide and hydrogen gas formed. | Very Violent reaction | Very Violent | No reaction (Metals are very reactive and form very stable oxides; A lot of energy is required to overcome the strong electrostatic
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of gluconic acid from β - D- glucose in two separate steps‚ the second step being nonenzymatic spontaneous hydrolysis. Glucose oxidase is used for the removal of glucose or oxygen from the food stuffs in order to enhance their storability. Hydrogen peroxide (H2O2) effectively kills bacteria; it can be eliminated by using catalase. An important application of these enzymes is in the processing of egg white for use in baking industry. The egg white is treated with a mixture of glucose oxidase and
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a rather constant rate. The slope of the curve at this initial time is constant and is called the initial rate. As the peroxide is destroyed‚ less of it is available to react and the O2 is produced at lower rates. When no more peroxide is left‚ O2 is no longer produced. Ev al ua tio n co Biology with Vernier py Many organisms can decompose hydrogen peroxide (H2O2) enzymatically. Enzymes are globular proteins‚ responsible for most of the chemical activities of living organisms
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reaction proceeds through‚ the total heat evolved or absorbed is the added heat values of each step and will always be a constant figure for that process. For example: When phosphoric acid (a trihydrogen acid) is neutralized with a base‚ the hydrogens are neutralised in 3 steps: STEP 1: H3P04 + NaOH > NaH2PO4 + H2O gives X amount of heat STEP 2: NaH2PO4 + NaOH > Na2HPO4 + H2O gives Y amount of heat STEP 3: Na2PO4 + NaOH > Na3PO4 +H2O gives Z amount of heat Therefore‚
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neutral | nucleus | 7. Complete the following table by filling in the boxes with the appropriate information for the neutral elements. Name of isotope | Atomic number | Mass number | Number of protons | Number of electrons | Number of neutrons | hydrogen-1 | 1 | 1 | 1 | 1 | 0 |
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