Determination of the Rate Constant for a Chemical Reaction Department of Chemistry Abstract This experiment was performed to determine the rate constant k‚ for hydrolysis of tertiary butyl chloride to tertiary butanol. The solvent system for this reaction is 45% isopropyl alcohol and 55% water. The rate of hydrolysis of t-butyl chloride is measured by the decrease in the concentration of this reagent with time. The rate of decomposition of t-butyl chloride must be equal to the rate of formation
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1. Two ships P and Q are moving along straight lines with constant velocities. Initially P is at a point O and the position vector of Q relative to O is (6i + 12j) km‚ where i and j are unit vectors directed due east and due north respectively. The ship P is moving with velocity 10j km h–1 and Q is moving with velocity (−8i + 6j) km h−1. At time t hours the position vectors of P and Q relative to O are p km and q km respectively. (a) (b) (c) Find p and q in terms of t. (3) Calculate the distance
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EXPERIMENT 2 ACID DISSOCIATION CONSTANT OF AN INDICATOR DYE OBJECTIVES Using spectrophotometric method: determine the wavelengths at which the acid and base forms of the dye in aqueous medium exhibit maximum absorption; determine the molar absorptivities of the acid and base forms of the dye and estimate an unknown concentration of the dye in solution using the Beer-Lambert’s Law; and determine the acid dissociation constant of the indicator dye. THEORY The absorption or reflection of
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Chapter 2: Stress: The Constant Challenge DEFINITIONS stress response The physiological changes associated with stress. stress The collective physiological and emotional responses to any stimulus that disturbs an individual’s homeostasis. autonomic nervous system The branch of the peripheral nervous system that‚ largely without conscious thought‚ controls basic body processes; consists of the sympathetic and parasympathetic divisions. parasympathetic division A division of the autonomic
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In our life‚ struggles are everywhere. If we want to be successful‚ we will have to strive hard. Just as an old Chinese saying goes‚ “There won’t be the fragrance of calyx canthus if the flower doesn’t go through the chilly winter.” Only after we undergo different kinds of hardships‚ can we achieve what we aim at. Therefore‚ we must get ready to face the toughest struggles and try to deal with any ups and downs calmly and bravely. When I was a little boy‚ I always dreamed of getting a nice toy
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Kandace Thompson Dr. Dillion English 1A 14 October 2011 The Struggles of Life Steppenwolf is a novel that is written about a man who has wolf characteristics and suffers from loneliness. His name is Harry Haller. “He went on two legs‚ wore clothes and was a human being‚ but nevertheless he was in reality a wolf of the Steppes” (40). Harry rents a place to live in a densely populated an area. Harry is a middle class person that appears to be out of place with the people in
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Immigrant Struggle It is the dream of every immigrant to live a worry free life in a new country that can offer so much. A place where one can work for suitable wages‚ a place where one can raise their children free of the problems plaguing their previous country and a place where one can grow spiritually and socially. While some people might believe that immigrants struggle ends when they come to America‚ filmmaker Mira Nair‚ argues against this statement by demonstrating the struggle of immigrants
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and 26th December 2009. He was born in Rhodesia (now Zimbabwe) and had ancestry of mixed French‚ Italian and South African. His activist life likens him to a crusader for his country. A knight on duty for a mistress; and this has so often appeared in his poetry. He loved South Africa deeply and did everything to win its freedom. In this poem‚ “It Is the Constant Image of Your Face”‚ he closes the first stanza by saying “my land takes precedence of all my loves”. This was his passion. While he was
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Stephanie Ralston Film Aesthetics and Analysis In the film‚ The Constant Gardener (Meirelles‚ 2005)‚ the use of editing helps to convey a central theme of uncertainty. Another important theme that arises in the film is justice. Uncertainty progresses into a revealing of truth that leads the protagonist to seek justice. The plot follows a young woman‚ Tessa (Rachel Weisz)‚ whose murder provokes her husband‚ Justin (Ralph Fiennes)‚ to explore the corruption of the drug company Tessa was trying
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and Their Struggles with Life Stephanie Hernandez COM/155 March 30‚ 2013 Steven Watkins A woman struggles in our society regardless if she has a home or if she is homeless. There are often several reasons we are seeing these issues in women today. For instance they may have families to support‚ they may not have a job‚ some may have addictions‚ or there may be some with no means of financial support. These are just some of the issues surrounding women and their struggles in life. We hope that
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