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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ABSTRACT This study will attempt to find out the awareness of Maubanin through Alternative Learning System Program. The research will make a survey for one of Barrangay here in Mauban Quezon. Specifically‚ it seeks to answer the following question: 1. What is Alternative System Program? 2. Where I can take ALS classes? 3. How can I enroll for ALS class? 4. What are the requirements? 5. Who conduct ALS class? 6. How long do ALS classes last? 7. Are we required to enroll in ALS A&E classes
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Making Connections: Chemistry Assignment By. Sujay Sukumar 5. a) When analyzing the graph‚ a relationship between the hydrocarbon chain of the alkane and its corresponding boiling point can certainly be noticed. There is a increasing correlation which can be explained using the theory that as each hydrocarbon chain gets bigger‚ there are more atoms and thus more electrons which contributes to higher dispersion forces and therefore a higher boiling point which is clearly seen through the graph.
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Chemistry vacation Assignment Standard -X 1. Name a sodium compound which is used for softening hard water 2. Write the chemical name and formula of baking soda? 3. What will happen if the solution of sodium hydrogen carbonate is heated? Give the equations of the reaction involved? 4. Write the chemical name and the formula of bleaching powder. 5. Write the chemical formula of plaster of Paris? 6. What will happen if heating is not controlled while preparing
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Clare Chong P2 ! ! ! ! ! Chemistry Practical 4: Measuring rate of reaction Aim of experiment: To determine the rate of reaction when the concentration of I2 increases. ! ! ! Chemical equation: 2Fe3+ + 2I- --> 2Fe2+ + I2 ! ! ! Apparatus & materials: Apparatus Quantity 50ml Pipette 1 10ml Pipette 1 Pipette bulb 1 100ml beaker 2 50ml Burette 1 250ml Conical Flask 6 Timer 1 Distilled water 100ml or more 50ml Measuring
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1.0 The definition and explanation of ethical principles in the pathology laboratory Ethics is defined by moral philosophy and study of what is right‚ fair‚ just and good: about what should be done‚ not just what is most acceptable or expedient (ref). The four principles of ethics are autonomy‚ non-maleficence‚ beneficence and justice. In this report the ethical principle of non-maleficence‚ where the health care practices and obligations are to do no willful harm‚ execute no negligence or malpractice
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staff‚ visitors‚ patients‚ clients and contractors. Many activities are undertaken in clinical laboratories therefore anyone entering is at risk at pathological specimen. Staff must observe important precautions to protect both themselves and others. The degree of risk will depend upon the sort of work they do and how well they observe the safety rules. Infection control is very important in laboratories because infections may be acquired by breathing in airborne droplets or dust containing infectious
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when one or more of the ligand ca coordinate to the metal in more then one way‚ e.g. in NO2 two oxygen atoms are potential donor site. Such a ligand is ambidentate. The following reactions show how linkage isomers can be prepared. [Co(NH3)5Cl]Cl2(s) + dilNH3(aq) → [Co(NH3)5(OH2)]Cl2 [Co(NH3)5Cl]Cl2 + NaNO2 + conc. HCl → [Co(NH3)5(NO2-N)]Cl2 (yellow or orange-brown) [Co(NH3)5Cl]Cl2 + NaNO2 → [Co(NH3)5(NO2-O)]Cl2 (red/ salmon-pink crystal) [Co(NH3)5(NO2-O)]Cl2 + warm HCl → [Co(NH3)5(NO2-N)]Cl2
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of the knowledge bank of individuals and then sharing that information with all of the employees within the organization proved to be one of the key components that distinguished Buckman Laboratories from its competition. However‚ in a market where knowledge management systems are more common‚ Buckman Laboratories will need to find a way to remain competitive. One way to achieve this would be to expand the function of the K’Netix system. In addition to being a knowledge sharing portal between all
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The Chemistry of Lipids Experiment #8 Objective To observe the solubility of lipids in polar and nonpolar solvents and to compare saturated and unsaturated fats in their chemical reaction with bromine. The percent fat in a food will be determined by extraction of the fat and weighing it. Introduction Lipids‚ by definition‚ are natural substances that do not mix with water but dissolve in organic solvents. There are several classes of lipids‚ including: fatty acids‚ waxes‚ triacylglycerols
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