1 in vapour state sulphur partly exists as S2 molecule which has 2 unpaired electrons in the antibondind pi orbitals jus lyk oxygen and thus exhibits paramagnetism. 2 An interhalogen compound is a molecule whose atom contains two or more different halogen atoms (fluorine‚ chlorine‚ bromine‚ iodine or astatine). Most interhalogen compounds known are binary (composed of only two distinct elements). Their formulas are generally XYn‚ where n = 1‚ 3‚ 5 or 7‚ and X is the less electronegative
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Chemist Vilas Pol inserted plastic bags into a specialized reactor in order to heat them to 700 degrees Celsius. This heating resulted in a fine black powder which contains tiny carbon spheres. This powder can form carbon nanotubes if a cobalt-based catalyst is added during the heating. The carbon nanotubes and carbon spheres formed from the plastic bags can be used to manufacture lithium-ion batteries‚ which powers most electronic devises and even electric cars. They are also useful in the tire
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number of electrons is 2‚6‚10‚14‚18……. ▪ this rule is called the Hückel’s Rule • monocyclic hydrocarbons with alternating single and double bonds are called annulenes • annulenes are named as [n]-annulene‚ where n is the number of carbon atoms in their ring‚ for example cyclooctatetraene is named [8]-annulene • cyclobutadiene has 4 electron (2pairs) so it’s not aromatic • cyclooctatetraene has 16 e (8 pairs) it also isn’t planer (it has a tub shape) so it’s not aromatic
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Anatomy & Physiology Name ________________________________ Organic Molecules Review Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. Ions are a. electrically neutral fragments of a molecule that has been split apart. b. polar molecules c. radioactive isotopes that give off alpha‚ beta‚ or gamma d. charged atoms or molecules that have gained or lost electrons. ____ 2. Sodium has eleven protons. How many electrons
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molecule to another. This experiment focused on an oxidation reaction. In organic chemistry‚ oxidation reactions occur when a carbon atom becomes bonded to a more electronegative atom‚ causing the electron density on the carbon atom to decrease (McMurray‚ 2012). Examples of oxidation reactions in organic chemistry are the breaking of a carbon-hydrogen bond‚ or the formation of a carbon-oxygen bond (McMurray‚ 2012). This reaction oxidized a secondary alcohol to a ketone (Williamson‚ 2003). The oxidation
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PRODUCTION OF CARBON PAPER USING CHARCOAL AND BLACK MIX OF USED BATTERY AS PIGMENT D EPARTMENT O F S CIENCE IN COOPERATION WITH THE AND T ECHNOLOGY ABSTRACT The objective of the first part of the study was to find the best ratio of ink using carbon from used batteries and charcoal as pigments. The ink was evaluated on the basis of how much pigment is suspended in the mixture and their shelf life. The second part was aimed at the production of carbon paper. The best kinds of ink were tested
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was explored. Byproducts were also considered and their mechanisms duly noted. Introduction: This experiment explores the use of organometallic reagents in addition reactions. Organometallic compounds have a carbon-metal bond‚ such as a carbon-magnesium or carbon-lithium bond. Transition metals can also be used such as rhodium or iridium. Organometallic compounds have a wide range of uses‚ including being consumed as a reagent and acting as a catalyst. Grignard reagents are
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each reaction’s product are formed under the constraints of stereochemistry and regiochemistry. In a general elimination reaction‚ an atom or group of atoms is removed from a carbon‚ along with an adjacent hydrogen‚ resulting in a C=C π bond forming between the α-carbon (where the leaving group was attached) and the β-carbon (where the adjacent hydrogen bond was attached). The first
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compound also known as Kevlar (“Aramids”). The chemical structure for Kevlar looks like this: It’s chemical or scientific name is 1‚4-phenylene-diamine and terephthaloyl chloride (“Aramids”). The rings are represent benzene and they benzene is 6 carbon atoms that
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addition: Bromination of (E) Stilbene Introduction: In this lab we used the greener approach‚ which involves the addition of bromine across a double bond. When bromine reacts with E-stilbene (trans-1‚2-diphenylethene)‚ two new chiral carbons are created from the sp2 carbons‚ therefore 3 different dibrominated stereoisomers are possible: meso-(1R‚2S)‚ or the raceminc mixture-(1R‚2R) or (1S‚2S)-dibromo-1‚2-diphenylethane (Gilbert‚ 2010). When the bromination ion intermediate proceeds through a stereospecific
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