Benedict ’s solution contains Cu+2 ions that are blue in colour. This means that when Benedict ’s solution is added to clear transparent or translucent solutions‚ the solutions turn light blue due to the presence of the Cu+2 ions. Out of the 12 solutions‚ solution 10 (beer) was a light brown-yellow colour‚ while the remaining 11 were either transparent or translucent. Thus‚
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INTERNATIONAL MARKETING CASE ANALYSIS SEMINAR : TESLA MOTORS INC. FREDERIC Jerry ABASSI Hafiz MBOUI Celjhussia WANG Xuxing INTRODUCTION : In 1827‚ the french mathematician and physician Jean-Baptiste Fourier come up with the notion of greenhouse. Therefore was introduced for the first time the notion of global warming. In 1967‚ whether 140 years later two scientists made the first global warming previsions: doubling of the carbon dioxide at the beginning of the twenty-first century
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The History of The Airship Airships. In the early years of War‚ these beasts were known for their majestic presence in the sky and were icons of a country’s power and prestige. They reigned mostly as reconnaissance and transport utility aircraft but there was something about this "lighter-than-air" ship that made it far more than a mere utility workhorse. In this essay‚ I will discuss the ever-popular and ever- living king of the sky; the Airship. Airships‚ or dirigibles‚ were developed from
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Life in the future is set to be very exciting. Your next mobile phone is keeping an eye on the house when you are on holiday‚ you are surfing the net and downloading videos while your kids are lying on the beach or sitting on the train reading their E-book. Later‚ you are in a restaurant‚ and after checking your pockets you find out that you have forgotten your wallet. No worries‚ just pick up that WAP phone and go to your bank’s website‚ insert a few details and transfer some money on to your smartcard
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such as blue and red litmus papers‚ beakers‚ and wells. Data Tables: Substance Name Color Odor Heat Effect Cold H2O Hot H2O Litmus Test Dilute HCl Dilute NaOH Mg Silver None None None Not soluble‚ small bubbles Red litmus paper Heat; smoking None Cu Gold Pungent Gas evolution None Not soluble Red litmus paper Nothing Cold Zn Silver None None None Not soluble Red litmus paper Cold Cold MgO White Pungent None Soluble‚ mixes Separates mixture‚ and then returns Red
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LAB REPORT Introduction: In a chemical change‚ the identities of substances change and new substances form. In an equation the substances on the left are the reactants. The substances on the right are the products. In this experiment the objectives are to observe evidence that a chemical change has taken place. Infer from observations that a new substance has been formed. Identify and record observations that show energy is involved in chemical change observe the color‚ solubility of some substances
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Lovea and Hate Love is the greatest gift we can ever hope to give or receive. Love is the one thing that can overcome so many of the difficult times that we are faced with in life. Love is so powerful - it can turn frowns into smiles. It can help mend the most broken heart. It can even turn all of the ugliness in the world into the mostbeautiful portrait we could ever have the pleasure to behold. Emotions are the strongest feelings that come to life through our highest highs and our lowest lows
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solution of Co turns pink. Although after add 12 M HCl‚ the solution turned purple‚ which is due to the combination of the neutral pink Co Solution and the blue CoCl4‚ HCl solution. During the flame test‚ there was no change‚ which ruled out Ba‚ Ca‚ Cu‚ K and Na. From all of these observations‚ there was no doubt that my cation was Co (II). To figure out my anion‚ the AgNO3 test proved to be very helpful. At first‚ it looked as if there was no precipitate formed but when you look closer you can
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into blue copper sulphate solution? b) Some copper pieces into green ferrous sulphate solution? c) An iron nail into blue copper sulphate solution? Q2.Complete and balance the following equations: a) Zn + O2 b) Pb + O2 c) Cu + O2 d) Mg + H2O e) Al + HCl f) MgO + H2O g) K2O + H2O h) Cu + HCl __________________ _____________________________ _____________________________ ______________________ _____________________ ____________________ __________________ ___________________ Q3. Give one example
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SYNT m o d u l a r · l a b o r a t o r y · p r o g r a m · i n · publisher: H. A. Neidig c h e m i s t r y 738 organic editor: Joe Jeffers Copper-Catalyzed Oxidation of Benzoin to Benzil prepared by Carl T. Wigal‚ Lebanon Valley College PURPOSE OF THE EXPERIMENT Oxidize benzoin to benzil using ammonium nitrate and copper(II) ion as a catalyst‚ monitoring the reaction by thin-layer chromatography. Characterize the product using melting point measurement and infrared spectroscopy. EXPERIMENTAL
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