Chapter 1:Introduction 1.1 Research Question: How does the concentration of Zinc Sulphate affect the ability of Dichlorophenolindophenol to be reduced during the light dependent reactions of photosynthesis in Spinacia oleracea? 1.2 Rationale behind research: A few years back‚ on a visit to my uncle’s farmland in Rajhistan‚ India‚ I came across a few barley farms that were clearly receiving polluted water from a zinc mine nearby. The very same crops were then sold in the market! As I recounted the
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Part 1A Analysis questions: 1. How many “chainobeads” was your enzyme able to make per minute in the 0 – 15 second interval? Our enzyme was able to make 6 chainobeads in the 0-15 interval. 2. How many “chainobeads” was your enzyme able to make per minute in the 60 – 120 second interval? Our enzyme was able to make 49 chainobeads in the 60-120 intervals. 3. Did your enzyme’s rate change over time? How does this compare to a real enzyme? The enzyme’s rate did change over time. This compares to a
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Discussion The reactivity series is a list of metals arranged in order of their reactivity based on displacement reactions‚ reduction of their oxides by hydrogen or carbon‚ the relative ease of decomposition of their compounds and reactions with oxygen‚ dilute acids and water. The higher up a metal is in the reactivity series‚ the more reactive it is. In the experiment conducted‚ the three metals‚ magnesium‚ zinc and copper each had to undergo displacement reactions and reactions with water‚ oxygen
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heat on ferrous sulphate crystals) (iii) Displacement reaction (iron nails kept in copper sulphate solution) (vi)Double decomposition reaction (reaction between sodium sulphate and barium chloride) APPARATUS REQUIRED: 1. A rack of at least six clean test tubes and a boiling tube (hard glass test tube) 2. Two 100 cc beakers 3. A test tube holder CHEMICALS REQUIRED: 1. Small pieces of quicklime (CaO) in crystal form and not in powder form 2. Ferrous sulphate crystals 3.
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Cooling Water Problems and Solutions Course No: M05-009 Credit: 5 PDH A. Bhatia Continuing Education and Development‚ Inc. 9 Greyridge Farm Court Stony Point‚ NY 10980 P: (877) 322-5800 F: (877) 322-4774 info@cedengineering.com COOLING WATER PROBLEMS AND SOLUTIONS Water is used in cooling systems as a heat transfer medium and frequently also as the final point to reject heat into the atmosphere by evaporating inside cooling towers. Depending on the quality of available fresh
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OBJECTIVE: The experiment was carried out to investigate the effects of the increase in the enzyme concentration on the rate of reaction. By using self investigative and experimental skills‚ the experiment was done in order to determine how the rate of reaction will be altered‚ whether it will increase‚ decrease or remain constant when the different concentration of enzymes added. INTRODUCTION: Enzymes are produced naturally in plant‚ animal‚ and microbial cell. There are thousands of different
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made from connecting two different metals together and immersing the combined piece into some sort of solution that creates conductive atmosphere ‚ the general purpose of a voltaic cell is to convert the chemical reaction between the metals and the solution into an electrical charge ‚ Hypothesis: the voltage produced by magnesium and cupper = the sum of the voltage produced by magnasium and iron ; and iron and cupper Variables: Independent variable: one metal use in one voltaic half cell: (half
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Aim: To produce and test for hydrogen gas. Materials: * rubber stopper * dilute hydrochloric acid (HCI) * zinc pieces (Zn) * test-tube rack * matches * dilute sulphuric acid (H2SO4) * 2 cm strips of magnesium ribbon (Mg) * Iron pieces (Fe) * Test-tube Method 1. Test the different metals with the acids by separately combining each piece of metal with 5mL of acid in a test-tube. 2. Cover the opening of the test-tube with the rubber stopper to trap any gas.
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Materials • 6 test tubes and rack • Test tube holder • Bunsen burner • Hydrochloric acid 0.1M • Copper sulphate solution 0.5M • Bunsen burner Method Diagrams of the set up for experiments: 1‚ 2 and 3 Experiment 1 1. Pour about 1cm of hydrochloric acid into each test tube 2. Drop a piece of zinc into each of the first two test tubes. Reduce the concentration of the hydrochloric acid in the second test tube by adding water until
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1. The property of metals by which they can be beaten in to thin sheets is called- a. malleability b. Ductility c. conduction d. Expansion Ans . 1. (a) 2. Which one of the following is metal? a. C b. N c. Na d. O Ans . 2. (c) 3. Which one of the following is non metal? a. Zn b. Al c. Fe d. N Ans . 3. (d) 4. All materials shown property of malleability expect a. Iron b. Graphite c. Aluminium d. Silver Ans . 4. (b) 5. Which one of the following is a good conductor of electricity
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