` CHEMISTRY PROJECT ON PRESENCE OF INSECTICIDES IN FRUITS AND VEGETABLES A PROJECT REPORT Submitted by VAISHAKH MURALEEDHARAN Class: XII-A JANUARY 2015 DEPARTMENT OF CHEMISTRY SHANTINIKETAN INDIAN SCHOOL DOHA-QATAR SHANTINIKETAN INDIAN SCHOOL‚ DOHA – QATAR Affiliated to the Central Board of Secondary Education‚ Delhi. Approved by the Ministry of Education‚ State of Qatar. BONAFIDE CERTIFICATE This is to certify that this project report entitled “CHEMISTRY PROJECT ON” PRESENCE
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The name silver is derived from the old Anglo-Saxon word ‘seolfor’‚ and the symbol (Ag) comes from the Latin name Argentum. From B.C times to present‚ the way the element silver is prepared‚ used and priced has slowly changed and evolved. Although these things change over the course of history‚ the chemical and physical properties of silver and any other element do not. Silver was not only used in Ancient Times‚ but throughout the Bible as well. Considered a precious metal since Ancient times‚ the
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Results and Calculations Figure 1: Stress-Strain Curve – Steel 1045 Figure 2: Stress-Strain Curve – Mild Steel Figure 3: Stress-Strain Curve – Aluminium Table 1: Physical Properties of Specimens Material Initial Gauge Thickness (mm) Final Gauge Thickness (mm) Initial Gauge Width (mm) Final Gauge Width (mm) Initial Gauge Length (mm) Final Gauge Length (mm) Initial Cross-Sectional Area (mm2) Final Cross-Sectional Area (mm2) Steel 1045 6.0 5.8 12.3 11.7 50.2 57.9 73.8 67.9 Mild Steel 6
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Activity 4 To solve the fracturing of the bracket we are going to change in dimensions make the bracket more compact and lighter which decrease the chance of fracture. And increasing the number of holes to 2 increases the stability of the cable and giving excess strength to the bracket. By using those dimensions below: Length: 250mm Width: 210mm Height: 125mm Thickness: 12mm Thickness of base: 10mm No. of mounting points: 4 No. of holding holes: 2 Diameter of the holes: 65mm each
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Lab Report: Enzyme Lab Your Name: Samantha Butcher Purpose of this Lab What is the goal of this lab? What question is it trying to answer‚ or what problem is it trying to explain? It is going to explain how a liver’s enzymes break down substances that could be harmful.| Hypothesis After reading the lab instructions - but before starting the lab - record your best “educated guess” about what will happen in the experiment. Give your reasons and outline any assumptions that lead
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Finding the formula of magnesium oxide Aims When magnesium is heated in air‚ it reacts with oxygen. During this oxidation reaction‚ magnesium oxide is produced. This increases the mass. If we know the mass of magnesium at the start‚ and the mass of magnesium oxide produced at the end‚ we can work out the mass of oxygen which has been combined with the magnesium. We can use these masses to work out the formula of magnesium oxide. Eye protection must be worn Apparatus Crucible and lid
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Introduction: ball mill is a key equipment for grinding materials after the crushing process‚ which is widely used in the manufacturing industries such as cement‚ silicate sand‚ new-type building material‚ refractory material‚ fertilizer‚ ore dressing of ferrous metal and non-ferrous metal‚ glass ceramics‚ etc. Ball mill can grind various ores and materials with dry type or wet type. There are two kinds of ball mills‚ grate type and overfall type due to different ways of discharging material. ball
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Written Analysis of the Case –WAC Benguet Corporation 1. Statement of the problem The Benguet Corporation refused to submit concentrate samples to the Philippine Associated Smelters and Refining Corporation (PASAR). The Benguet Corporation faces shortage in producing their products and complying its contract to Mitsubishi Metal Corporation and complying the LOI. 2. Analysis of the case Strengths The Benguet Corporation is the major producer of copper concentrates. It was the oldest
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The lime industry is a significant carbon dioxide emitter. The manufacture of one tonne of calcium oxide involves decomposing calcium carbonate‚ with the formation of 785 kg of CO2 in some applications‚ such as when used as mortar; this CO2 is later re-adsorbed as the mortar goes off. Additionally‚ if the heat supplied to form the lime (3.75 MJ/kg in an efficient kiln) is obtained by burning fossil fuel it will release CO2: in the case of coal fuel 295 kg/t; in the case of natural gas fuel 206 kg/t
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Unit 4 Assignment 1 Copper vs. Fiber Paper Copper wire is found in most household electric or electrical related devices. One advantage of copper wire is its conductivity. Copper wire is second only to silver wire in level of conductivity meaning it will accept a current more so than almost any other type of wire. Copper wire is also heat resistant and can handle high levels of charge without many issues with overloading the wire. Copper in itself is also resistant to corrosion. This helps
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