Objectives 1-Describe the periodic trend in atomic radius and relate it to atomic structure 2- Describe the periodic trend in electronegativity and relate it to atomic structure Did you know? There are atoms with no electronegativity because electro negativity refers to the attraction of atoms of electrons in a compound; elements that do not form are assigned no electronegativity values. Atomic Radius ≠ Ionization Energy As you move from left to right on the periodic table‚ the number of
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Synthetic Organic Compounds Synthetic organic compounds are a relatively new discovery in the field of chemistry but have had a major impact on the world. These compounds differ from organic compounds as they are manmade. Synthetic organic compounds have been damaging people and the environment since they were created. Synthetic compounds such as chemical pesticides‚ herbicides and fertilizers have been beneficial to food production and
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1.0 INTRODUCTION Islam has strictly prohibited all the activities that are did not give any benefits or get the profits from a wrong or illegal ways. It also waste peoples’ time‚ energy‚ money and make others in trouble and difficulties. The activities are like riba‚ fraud‚ gambling‚ gharar‚ sell goods that are no use and others. All of the activities are against by Shariah but in our country‚ there are many cases of these activities. People do not take care about halal and haram of the things
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Identification of a Copper Compound by Percent Mass Unknown Compound: #9 Abstract: The objective of this experiment was to identify the unknown pure copper salt compound of #9. To do this‚ the mass of copper in the unknown was calculated and then divided by the mass of the whole compound to get the percent copper. The molecular weight was also calculated by dividing mass of copper compound used by moles of compound in unknown sample. The percent copper averaged out to 31.6% while the molecular
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1. An organic compound X with a molecular formula C2H6O undergoes oxidation with in presence of alkaline KMnO4 to form a compound Y. X on heating in presence of Conc. H2SO4 at 443K gives Z. Which on reaction with H2Oin presence of H2SO4 gives back `X` `Z` reacts with Br2 (aq) and decolorizes it. Identify X‚ Y‚ & Z and write the reactions involved. 2. An organic compound ‘A’ is widely used as a preservative in pickles and has a molecular formula C2H2O2. This compound reacts with ethanol to
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In the investigation‚ the 200mL beaker started with an average temperature of 43.5oC it then gradually fell to 41oC after 45 seconds‚ then rapidly decreased in temperature by 2oC every 15 seconds. At the 90 second period it decreased by 4oC from 35.5oC to 31.5oC it then steadied out falling by 1oC per 15 seconds until the 120 second stop mark. For the 500mL beaker the temperature difference between the 15 second intervals were very different being more gradual with the temperature on average falling
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compulsory. 2. Question nos. 1 to 8 are very short answer questions and carry 1 mark each. 3. Question nos. 9 to 18 are short answer questions and carry 2 marks each. 4. Question nos. 19 to 27 are also short answer questions and carry 3 marks each 5. Question nos. 28 to 30 are long answer questions and carry 5 marks each 6. Use log tables if necessary‚ use of calculators is not allowed. (1) Why is ferric chloride preferred over potassium chloride in case of a cut leading to bleeding? 1 (2) Why does
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Select the Task 1 commands in the Virtual CLI using the mouse and click on the Copy button. Use V to paste commands and the output into the textbox provided below: Select Identify Unreachable interfaces from the Flow Analysis menu. Select For all nodes in the Choose Nodes dialog and click Compute. Capture the Compute dialog window that says "All demands are routable" into this lab document below: All demands are routable. Task 2 – Flow Analysis Security Demands Configuration
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COMPOUND INTEREST Making or Spending Money SIMPLE INTEREST FORMULA If a principal of P dollars is borrowed for a period of t years at a per annum interest rate r‚ expressed as a decimal‚ then interest I charged is I Pr t This interest is not used very often. Interest is usually compounded which means interest is charged or given on the interest and the principal. Simple Interest Example COMPOUND INTEREST Payment Periods: Annually Once per year Semiannually Twice per year Quarterly
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same end product‚ are done on a much larger scale in industry. The aspects they may differ in are equipment‚ time taken‚ and many other things. In this report I will explain how and why laboratory and industrial scale differ using the example of preparation of aspirin. The first difference is that instead of weighing the 2-hydroxybenzoic acid on scales on a work bench in a beaker as you would in small scale‚ it is easier and safer to weigh it onto scales‚ in a plastic bag on the floor. This is easier
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