vice versa. Intermolecular forces are forces of attraction and repulsion between molecules that hold molecules‚ ions‚ and atoms together. The intermolecular forces that can be present in a solution are london dispersion forces‚ dipole-dipole force‚ hydrogen bonding and ion-dipole forces. In this experiment the substances that were used were acetone‚ methanol‚ water‚ 1- butanol and ethyl acetate. Acetone is the organic compound with the formula (CH₃)₂CO. It is a colorless‚ volatile‚ flammable liquid
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Homework 1_Key BCH2333 Winter 2015 Topics covered: review‚ Chemical Evolution‚ Water‚ Non-covalent bonds‚ Acid/base‚ pH 1. i) Convert using scientific notation to liters: 4 nanoliters‚ 4 x 10-9 L‚ 20 microliters‚ 2x10-5 L‚ 35 milliliters‚ 3.5 x 10-2 L‚ 10 deciliters‚ 1 L‚ 7 kiloliters 7 x 103 L ii) Convert using scientific notation to grams: 6 mg‚ 6 x 10-3 g‚ 21 µg‚ 2.1 x 10-5 g‚ 503 ng‚ 5.03 x 10-7 g‚ 10 kg‚ 1 x 104 g 2. Which of the following properties of water explains its ability to dissolve
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this experiment is basically adding hydrogens and losing the carbon-oxygen double bond. (See FIGURE-4) (FIGURE-4) In order to tell how much borneol is formed during reactions‚ both qualitatively and quantitatively‚ infrared spectroscopy and gas chromatography are executed on the products formed from Sodium Borohydride Reduction and Meerwein-Ponndorf-Verley Reduction (MPV). Infrared (IR) spectroscopy shows the relative absorption of specific chemical bonds in a molecule to the induced infrared
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n-decane | 75 | -30 | 174 | The simplest organic compounds are hydrocarbons. Hydrocarbons contain only two elements‚ hydrogen and carbon. A saturated hydrocarbon or alkane is a hydrocarbon in which all of the carbon-carbon bonds are single bonds. Each carbon atom forms four bonds and each hydrogen forms a single bond to a carbon. The bonding around each carbon atom is tetrahedral‚ so all bond angles are 109.5°. As a result‚ the carbon atoms in higher alkanes are arranged in zig-zag rather than linear
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Effects of Different Concentration of Catalyse on Hydrogen Peroxide Aim: In this investigation I will try to find how long it takes for the filter paper disc to rise up whilst varying the amounts of concentration of catalyse. Prediction: I predict that the lower the concentration of catalyse the longer it will take for the filter paper disc to rise to the surface of the tube. Equipment: 1. Hydrogen peroxide in a container 2. Flat bottom tube 3. Tweezers 4. Filter paper
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are the similarities and differences in the structures of the three dyes? a. Red No. 40‚ Blue No. 1‚ Yellow No. 5 contain carbon rings and NaSO3. Additionally‚ Red No. 40 and Yellow No. 5 are very similar‚ as they both contain one nitrogen double bond‚ a hydroxyl group‚ and no ions. Blue No.1 contains nitrogen and chlorine ions and N(C2H5)CH2. 2. In the Introductory Activity‚ the developing solvents were 2% sodium chloride aqueous solution and 2% isopropyl alcohol aqueous solution. Draw separate
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elements‚ Hydrogen and Oxygen. It is non-toxic and under normal temperature and pressure is colourless‚ odourless and transparent liquid which is regarded as the source of human life It is the most common substance of our planet and not only it is essential for human survival but also an important part of the organism. Sources of water Natural sources ( rivers‚ lakes‚ sea water‚ ground water‚ atmospheric water‚ etc.) Artifial sources ( chemically produced by the reaction of Hydrogen and Oxygen
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atoms. Each Carbon atom is bonded to 4 others which tetrahedrally surround the atom. They have a high melting point as a large amount of heat energy is needed to break their bonds. They are unable to conduct electricity as they have no free mobile electrons to carry the current. Diamond is very hard as there are many bonds within the substance. It is the hardest natural substance and is often used in drilling. Graphite Structure: Arranged in layers of atoms. Each carbon atom is joined to 3 others
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more carbon-hydrogen bonds to a compound. In a reduction reaction the oxidation number of a carbon atom decreases. The opposite is an oxidation reaction in which the carbon atom oxidation number increases. In compounds with double or triple bonds a reduction reaction can occur by adding hydrogen atoms across the pi-bond. This can change an unsaturated compound to a saturated compound. Saturated means that the compound has the maximum amount of hydrogen bonds with no double or triple bonds in the compound
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10/09/13 Grading criteria Y/N Feedback (including action where necessary) P1 Describe the structure of hydrogen‚ carbon‚ oxygen and nitrogen and relate these to the structure of biological molecules P2 Describe the structure of water and carbon dioxide with reference to different types of bonding M1 Explain the relevance of the electronic configuration of hydrogen‚ carbon‚ oxygen and nitrogen to biological molecules Learner Declaration I declare that
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