its molecular kinetic energy. Solidification Crystallization Solids are incompressible and are very dense relative to gases. 13.2 Intermolecular forces: the forces between individual particles of a substance. Intramolecular forces: covalent and ionic bond within compounds. Attractive forces between molecules are mainly due to hydrogen bonding. Ion-ion attraction The energy of attraction between two oppositely charged ions is directly proportional to the charges on the ions and inversely
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strong enough to hold the bilayer together. B) water that is present in the middle of the bilayer freezes and is easily fractured. C) hydrophilic interactions between the opposite membrane surfaces are destroyed on freezing. D) the carbon-carbon bonds of the phospholipid tails are easily broken. E) the hydrophobic interactions that hold the membrane together are weakest at this point. 11) The presence of cholesterol in
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Tutorial 2 Q1. Why do most international bonds have high Moody’s or Standard & Poor’s credit ratings? Credit Rating is a social intermediary service to provide credit information and reference for the community. Credit rating is aim to show the size of a credit default risk the rating object‚ rating agencies focus on financial conditions and historical data to give the overall valuation of object. Currently‚ credit rating on the issue of international bonds is the popular investment risk valuation
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Bonding Three types of bonds Ionic bond: 2 oppositely charged atoms (Na and Cl) Polar covalent: Unequally shared electrons (H and O) Non polar covalent: Equally shared electrons (C and C) or similar electronegativity Electronegativity and chemical bonding Electronegativity is a measure of the strength in which an atom can attract electrons. A difference of < 0. 5 is non polar covalent bond A difference of 0.5 – 1.7 is polar covalent bond A difference of > 1.7 is ionic bond Intermolecular forces
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Two of these pairs are shared which form the shared pairs form covalent bonds with the hydrogen atoms. The remaining two pairs are unshared and have a greater repulsive effect than the shared pairs. The combined repulsive effect of the two unshared electron pairs produces an H-O-H bond angle that is smaller than the H-C-H bond angle (109.47 degrees) in methane or the H-N-H bond angle (107 degrees) in ammonia. Actual measurement of the bond angle in water is 104.5. If the two hydrogen nuclei were
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1) Homeostasis is the condition in which the body maintains a. changing state‚ within an unlimited range. b. an equilibrium point that can change over a narrow range that is compatible with maintaining life c. an equilibrium change that balances external and internal environment such that values of each are equated 2) Anabolism is the a. breakdown of matter. b. expulsion of matter. c. synthesis of matter. d. All of the answers are correct. 3) The sum
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Municipal Bonds The greatest advantage of municipal bonds can be summed up in two words: tax free. The interest rates on municipal bonds may seem low compared to similar long-term securities like Treasury bills and CDs‚ but tax advantages may level the playing field. Let ’s look at some examples. If you ’re in the 25 percent bracket for 2008 federal income taxes‚ you ’d have to find a taxable security with an interest rate of 4 percent to equal the yield of a tax-free municipal bond with an interest
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All the bonds in a particular issue may mature at the same time (term bonds) or in installments over a period of time (serial bonds). Serial bonds are like installment notes payable. Some of Southwest Airlines long-term debts are serial in nature because they are payable in installments. Secured‚ or mortgage‚ bonds give the bondholder the right to take specified assets of the issuer if the company defaults that is‚ fails to pay interest or principal. Unsecured bonds‚ called debentures‚ are backed
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River By Abha Sirohi Research Scholar‚ A.K.P. G. College‚ Hapur (Ghaziabad) .................................................................................................................................................................. Ruskin Bond attempts to analyze human psychology in his short stories; He deals with the elemental and impulsive life of man. He tells the stories objectively and beyond all these things his stories shows goodness of man’s heart and his faith in the Supreme power
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Introduction A lot has been written about Ruskin Bond‚ our very own Indian writer‚ whose writing s span over 50 years. His versatile‚ original and elegant style of writing has made him a favourite to readers around the world. Despite Bond’s British background‚ he writes about India as an insider’s perspective. Having lived the majority of his life in India‚ he knows the country well and writes an authenticity and emotional engagement about the land and the people of the Himalayas and small-town India
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