toothpicks between two atoms represent a double bond‚ and three toothpicks between two atoms represent a triple bond. Remember that the lone pairs on the central atom take up space and play a role in determining the shape of the molecule. Represent each lone pair (nonbonded pairs of valence electrons) on the central atom with a nonbonded toothpick. The bonds and lone pairs on the central atom should be spread apart as much as possible. 2. Refer to the VSEPR theory to check the shape of each of the
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Chemistry S-20 Week 1 Alkenes: Isomers and Nomenclature 1. There are 6 unique alkene isomers of the hydrocarbon C5H10. Draw each of these isomers‚ and provide a systematic name for each. 1-pentene (E)-2-pentene (Z)-2-pentene 2-methyl-1-butene 2-methyl-2-butene 3-methyl-1-butene 2. For the three alkenes above which are various isomers of pentene‚ rank them in order of stability. Explain your ranking. most stable (more subst. double bond) less stable (cis alkene is
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HYDROGEN BONDING: Hydrogen bonding is a bonding type consisting of dipole and dispersion forces. A hydrogen bond is the attractive force between a hydrogen atom attached to a molecule and an atom of a different molecule. According to the Pauling scale of electro-negativities of the elements‚ it can be viewed that the three most electronegative elements in the periodical table are nitrogen‚ oxygen and fluorine. These are also called heteroatoms. The heteroatoms have a partial negative charge while
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Ramamoorthy‚ Ph.D. Assistant Managing Editor: Swarna Thirumalai‚ M.A. Women in Shakespeare’s Julius Caesar Iftikhar Hussain Lone ============================================== http://en.wikipedia.org/wiki/Julius_Caesar Nature herself was proud of his designs‚ And joyed to wear the dressing of his lines‚ Language in India www.languageinindia.com 12 : 7 July 2012 Iftikhar Hussain Lone Women in Shakespeare’s Julius
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Examine Changes in the Patterns of Childbearing and Childrearing in the UK Since The 1970’s In the last 40 years‚ patterns for both childbearing‚ which is having children‚ and childrearing (which is the primary socialisation of children) have changed due to several different reasons. Since the 1970’s less children are born outside of marriage‚ we know this due to statistics which show that over four out of ten children are now born outside of marriage which is five times more than in the early
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The Age of Exploration was a period from the early 1400s and continuing into the early 1600s‚ during which European ships traveled around the world to search for new trade routes to feed growing capitalism in Europe. The most commonly sought after new trade route was to the Spice Islands‚ which are now the Indonesian archipelago‚ in southern Asia. Spices were originally brought to Western Europe by land routes‚ but because of a lack cargo space and extremely long travel times the prices were very
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Was the battle of Dunkirk a triumph or success? A question with no simple answer and probably a question we will never know the true answer to. In the 70 plus years since the battle‚ a variety of medias‚ for example textbooks‚ diary logs and newspaper articles have continued to influence peoples different interpretations on whether or not the events at Dunkirk deserve to be remembered as a triumph or in fact a failure for Britain and its people. In the month of May 1940‚ Hitler’s army was winning
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Shin confessed to him that he really has no idea what can be done besides spreading the word like he has been trying to do since his escape (Philling). Shin continued to say to the interviewer that David Philling and him also went on to discuss that the only full proof solution to the political prison camps‚ besides the spreading of information about them‚ is complete invasion in North Korea to liberate my countrymen (Philling). The mentioning of liberation hung in the air between Shin and the interviewer;
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undermines the traditional nuclear family. In their view‚ divorce creates more welfare dependent lone parent families‚ 90% of all lone parent families are matriarchal families and prevents boys from growing up properly‚ without the male role model they need to be successful for the future. As stated in 2B the New Right argue that the benefit system undermines traditional nuclear family by encouraging lone parents through divorce. Postmodernists would totally disagree with New Right thinkers and argue
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of a "lone traveler" and his adventures through a blizzard. He starts off the poem emphasizing the importance of the first sentence and how it is portrayed as a lone traveler going through a tough blizzard. By using the analogy of the traveler‚ Collins allows readers to imagine the difficulties a writer goes through while writing. Collins ends the poem saying "the man will express a single thought" as if to say he has finally finished explaining the difficulties of writing‚ therefore the lone traveler
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