primaryrx.com/pdf/C-PHEN%20DM%20DROPS.pdf 1 Chapter 15: Benzene and Aromaticity Introduction: • All organic compounds can be derived into two broad classes 1. Aliphatic compounds Nonaromatic hydrocarbons such as alkanes‚ alkenes or alkynes 2. Aromatic compounds A series of cyclic unsaturated compounds with unusually high stability • The properties and reactions of aromatic compounds are exemplified / demonstrated by the properties and reactions of benzene (the “parent” aromatic molecule)
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The Physical Properties of Eleven Chemical Compounds Problem: Discover whether various chemical compounds are molecular or ionic and if they are acidic or basic. Hypothesis: If the compound is ionic‚ then it will be soluble because the energy given off water molecules compensates for the energy needed to break ionic bonds‚ also‚ if the compound is Ionic‚ it will be an electrolyte‚ because they mostly break up into ions when in water. If the compound is molecular‚ then it will be soluble‚ it cannot
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-APPLICATION OF ENZYMES IN ORGANIC CHEMISTRY Why enzymes in organic synthesis? | Alternative to chemical methods: * High region- and stereoselectivity * Milder reaction conditions * Environmentally more friendly | Which enzyme(s)? | OxidoreductasesHydrolasesLyasesIsomerases | Which reaction system? | AqueousAqueous and water-miscible organic solventAqueous and water-immiscible organic solventPure organic solventOther solvents (supercritical fluids‚ ionic liquids) | Which ‘chemistry’
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The Purity and Purification of Solids Melting Point Lab Introduction: The point of this lab was to determine the eutectic point for the naphthalene biphenyl mixture‚ as well as determining the melting point of an unknown substance by comparing it with two known samples. Melting point is a temperature in which a substance changes from solid state to liquid state. Melting points are used to determine whether the given substance is pure or not. Substances that melt sharply‚ less than 1-2°C indicates
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patient. However‚ we are only interested in the patient’s head and more specifically the brain‚ that is why in this step we perform an orientation step to orient all the brain images into a common coordination and then we perform the brain extraction using brain extraction tool (BET) which will result two images‚ one image contains only the brain and the other one contains the brain and the skull‚ both images are needed for further analysis‚ Figure 2.4 and Figure 2.5 Show the MRI image before and after
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dental patients reach peak candidacy for wisdom tooth extraction. This oral surgery procedure is best performed at this age because the wisdom teeth are fully formed‚ and removing them can prevent overcrowding and other dental issues from occurring down the road. The family dentistry professionals at Lowitz & Meier in Cincinnati‚ OH‚ will assess your teen’s wisdom teeth to determine whether extraction is the best option for them. Wisdom tooth extraction is a common form of oral surgery that minimizes
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in organic solvent Acetyl-ferrocene C12H12FeO 228.08 - 81 oC -83 oC 161 oC - 163 oC (at 4 mm) Very slightly soluble in water‚ soluble in organic solvent Ethyl Acetate C4H8O2 88.11 0.897 -83.6 oC 77.1 oC Slightly soluble in water (~8.3g/100mL‚ 20 oC)‚ very miscible with alcohol‚ ether‚ acetone‚ benzene. Hexane C6H14 86.18 0.6548 -95 oC 69oC Immiscible with water Dichloro-methane CH2Cl2 84.93 -97 oC 40 oC 1.325 Slightly soluble in water (~1.3g/100mL‚ 20 oC)‚ very miscible with most organic solvent
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sample would be 5000 rpm because there are only two layers so the soil is more separate in that speed. Describe in which layers you are likely to find the organic matter‚ gravel‚ sand‚ silt‚ and clay at the following speeds: 5000 rpm 15000 rpm The layer you are likely to find the organic matter‚ gravel‚ sand‚ silt‚ and clay is 15000 rpm because there are five layers so you will find
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CHEM 3305 - 001 Organic Chemistry 1 Dr Michael Findlater Spring Semester‚ 2013 Stereochemistry • Stereochemistry refers to the three-dimensional structure of a molecule. • As a consequence of stereochemistry‚ apparently minor differences in 3D structure can result in vastly different properties. • We can observe this by considering starch and cellulose‚ which are both composed of the same repeating unit. Stereochemistry of Starch and Cellulose Figure 5.2 • In cellulose
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Hydrogen is recognized as the simplest and lightest chemical element in the periodic table; even though it is identified as one of the top elements in abundance in the world (consisting of 0.9 percent of the total mass on earth)‚ it is considered to be the most abundant element in the entire universe. It is a gaseous element with the atomic symbol being H. It is usually categorized under the first group of the periodic table known as the alkali metals. It contains only one electron that revolves
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