trans) CH2CH3 C) CH3 CH2=CCH2CHCH2CH3 CH3 CH2 D) CH3CH2CCHCH2CH3 CH3 CH3 E) CH3CH2CHCHCH=CH2 CH3 Ans: B 241 Keghan Chapter 8 Topic: Structure Elucidation 2. Ozonolysis of compound Z yields the products shown below. What is the structure of Z? O Z 1) O3 2) Zn‚ HOAc O 2HCH + CH3CCH2CH O I II III O H IV A) B) C) D) E) O V I II III IV V Ans: B 242 Keghan Chapter 8 Topic: Structure Elucidation 3. Compound
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What is the difference between ecosystem and ecology? Ecosystem is the physical system (an open system) in which the mutual interaction between biotic and aboitic component motored by the energy component is studied. While the Ecology is the science which study the interrelation between Abiotic (inorganic) and Biotic (organic) components as well as the interaction among the biotic component. To make it more clear‚ ecosystem is the fundamental unit of ecological study. Ecology vs Ecosystem
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detected using the appropriate procedure and equipment. In order to quantify the amount or concentration of an analyte in a sample‚ a standard curve (calibration curve) is usually generated. The standard curve is a graph that established the relationship between signal intensity and amount or concentration of
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Bibliography: BIBLIOGRAPHY Alchin‚ L. (n.d.). The Element Aluminium. Retrieved September 17‚ 2014‚ from ElementalMatter.info: http://www.elementalmatter.info/element-aluminium.htm Aluminium. (n.d.). Retrieved September 17‚ 2014‚ from Royal Society of Chemistry: http://www.rsc.org/periodic-table/element/13/aluminium Aluminium Element Facts. (2014‚ July 26). Retrieved September 17‚ 2014‚ from Chemicool.com: http://www.chemicool.com/elements/aluminum.html Aluminum or Aluminium Facts. (n.d.). Retrieved September
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pages 4 and 5 on hand lab #6 Preparation of 2-chloro-2-methylbutane-An Sn1 Reaction [1]. In this experiment‚ the instructor requested that 4 ml diethyl ether be added to the solution in the conical vial after step 4 to help better see the difference between the organic and aqueous layer. During step 4‚ NaCl(aq) was also available‚ and was used instead of water. The last test involving NaI was not performed. Results A volume of 1.54 ml of
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Big Idea 2 Biological systems utilize free energy and molecular building blocks to grow‚ to reproduce and to maintain dynamic homeostasis. Living systems require both free energy and matter to maintain order‚ grow and reproduce. Organisms employ various strategies to capture‚ use and store free energy and other vital resources. Energy deficiencies are not only detrimental to individual organisms; they also can cause disruptions at the population and ecosystem levels. Biological systems must both
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the British Association in August 1894‚ they announced the discovery of Argon. They found the gas by isolating a small sample of the nonreactive portion of atmospheric nitrogen; once all the oxygen and nitrogen were removed from the sample of gas what they had left
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5. What is the Relationship between Short-term Unemployment and Inflation? What cause inflation? Inflation refers to a rise in prices that causes the purchasing power of a nation to fall. Inflation is a normal economic development as long as the annual percentage remains low; once the percentage rises over a pre-determined level‚ it is considered an inflation crisis. There are many causes for inflation‚ depending on a number of factors. For example‚ inflation can happen when governments print
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5. State the appropriate term used for : – A liquid or solution‚ which conducts electricity with accompanying chemical change. Ans.: - Electrolytes. Q.6. Electrons are getting added to an element Y. (i) Is Y getting oxidized or reduced? (ii) What charge will Y have after the addition of electrons? (iii) Which electrode will Y migrate to during electrolysis? Ans : - (i) Reduced (ii) Negative (iii) Anode Q. 7. Explain how electrolysis is an example of redox reaction. Ans.: - A redox reaction
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Baking Project There are several chemical reactions taking place in the general baking of cakes. Every ingredient has its own function and causes a different reaction Synthesis: * Egg yolks (modify molecule’s structure) helps the oil-based and water-based components of the cake mix together. When eggs are cooked‚ the protein molecules become uncurled when exposed to heat and create new molecular bonds with other nearby protein molecules. When the egg is completely cooked‚ it helps form a
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