71‚ 129.88‚ 130.32‚ 137.35‚ 137.51‚ 147.59‚ 159.9‚ 161.47 (aromatic carbons)‚ 162.43 (CO amide). The mass spectrum (chart 8) supported the structure of compound 1b‚ where the mass spectrum for 1a with the molecular formula C21H15N3O3 the molecular ion peak [M+] exactly at (m/z) = 341.00‚
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Acids & Bases: Reactions‚ Standardizations‚ & Titrations Experiments 21 & 22 Experimental Overview: The procedure for this experiment was carried out as instructed in the laboratory manual‚ Experiments in General Chemistry‚ 4th ed.‚ S.L. Murov‚ Experiment 21‚ Acids and Bases: Reactions and Standardizations‚ and Experiment 22‚ Acids and Bases: Analysis. There were modifications made by the instructor to dilute the 6M NaOH to 0.1M in 300mls
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Nonmetals are on the right side of the periodic table (with the exception of H). Metalloids border the stair-step line (with the exception of Al‚ Po‚ and At). Metals are on the left side of the chart. When atoms lose or gain electrons‚ they become ions. Cations are positive and are formed by elements on the left side of the periodic chart. Anions are negative and are formed by elements on the right side of the periodic chart. Ionic compounds (such as NaCl) are generally formed between metals and
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very high temperatures (750– 900oC) and passed through hot metal coils. The heat from the coils breaks the bonds to change the ethane‚ or the larger hydrocarbons to ethylene. C2H6 ( C2H4 + H2 .3 Identify that ethylene‚ because of the high reactivity of its double bond is readily transformed into many useful products. Alkenes: more reactive than alkanes due to the presence of the C=C double bond‚ which can be broken and join up with other molecules to form a polymer. (Addition reaction)
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Chapter 1 THE PROBLEM 1.1. Introduction Heavy metals such as lead‚ zinc‚ copper‚ can often be found in industrial wastewater and their discharge to the environment poses a serious threat due to their acute toxicity to aquatic and terrestrial life which includes humans. As a result of increasing industrialization more heavy metals are continually released to the environment and this has prompted environmental engineers and scientists to think of better methods by which heavy
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formation of a complex ion FeSCN2+. This was accomplished using a colorimeter to measure absorbance of some known concentration solutions in order to generate the calibration curve. The equation of the graph was used to compute the equilibrium concentrations of the reactants and products‚ needed to calculate the equilibrium constant for the reaction. I. Introduction: The purpose of the experiment is to determine the equilibrium constant for the formation of a complex ion iron (III) thiocyanate
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is unable to react with hydrochloric acid. This greatly indicates that element X is a non-metal as most non-metals fail to react with hydrochloric or dilute acids. In order for a substance to react with an acid‚ it has to provide electrons to the H+ ions produced by the acids. Generally‚ non-metals themselves are acceptors of electrons. This is why non-metals generally
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163 CHAPTER 13 HYDROCARBON Hydrocarbons are composed of Carbon and hydrogen. The important fuels like Petrol‚ kerosene‚ coal gas‚ CNG‚ LPG etc. are all hydrocarbons or their mixture. Sources: Petroleum and natural gas are the major sources of aliphatic hydrocarbon while coal is an important source of aromatic hydrocarbons. The oil trapped inside the rocks is known as petroleum. PETRA – ROCK‚ OLEUM – OIL. The oil in the petroleum field is covered with a gaseous mixture known as natural
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substance at the molecular level. Physical Properties: A property that can be observed or measured without changing the chemical identity of the substance. Physical properties can be categorized as either intensive or extensive. Reactivity: An element or compound’s reactivity is its ability or capacity to react‚ or bond‚ with another substance. As you continue through this course‚ you will observe and compare this particular chemical property in a variety of scenarios. Flammability: One type of chemical
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CONTENT INTRODUCTION WATER PURIFICATION BY NANOPARTICLES NANOPARTICLES IN WASTE WATER TREATMENT MATERIALS AND METHODS CONCLUSION REFERENCES INTRODUCTION WATER PURIFICATION: It is the process of removing undesirable chemicals‚ biological contaminants‚ suspended solids and gases from contaminated water. NEED: The goal of this process is to produce water fit for a specific purpose
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