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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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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Have you ever felt like you or your child is not getting a proper education? Are you a student who has below average grades and yet still manages to pass your class? Have you ever wondered why the U.S has gone from 18th in math to 31st? The answer to these questions‚ and many more that people have been posing is quite simple. Our education has just simply gotten worse. Many people today in society believe our education has gotten worse‚ though some believe that it is up to standards. I believe that
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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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Maybe‚ that is because gardeners have a much different attitude about this type of work than others do. And attitude is everything when it comes to performing any task. A little bit of determination and the drive to succeed doesn’t hurt either. But that can be applied to anything. So it helps others to see our point of view when we describe all the aspects of gardening that make it fun to us. A few of the best of them include: The Smell of the Dirt Don’t laugh‚ but gardeners find the sweet aroma
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Freedom Free? Political activist‚ radical‚ intellectual‚ communist‚ feminist‚ rebel‚ scholar‚ revolutionary‚ but the story of her life can be defined as justice seeker. Angela Davis has notably become known as a novelist‚ in her narrative essay‚ “Freedom Is A Constant Struggle” that acknowledges discriminatory acts towards African Americans in particular. Davis motivation is to show the historical unequal treatment of African Americans in North America. She embraces a tone that is reflective of the
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In How I Became a Prison Gardener‚ by Michelle Scott‚ the author talks through her experience of caring for plants and how things progress in her tangible garden as well as the garden of her mind whilst in prison. Michelle discusses how in the beginning there were few animals lingering around the garden and her sole motive for going there was to escape from the fact that she was in prison. Scott says she poured her all into her garden work and eventually it became an introspective activity. According
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major factors that are used by humanity to destruct this world and those could turn against humanity itself at the end. Atwood talks about technologies‚ genetic engineering‚ scientific inventions‚ private corporations and law and order. The God’s Gardeners in the novels can be compared to the ecological splinter groups that still believe in the importance of nature and take serious actions to protect the nature. Their love and respect for nature can be seen in their deeds to conserve the remains of
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Spectrophotometric Determination of an Equilibrium Constant Introduction: In this experiment‚ you will study the reaction between aqueous iron (III) nitrate‚ Fe(NO3)3‚ and potassium thiocyanate‚ KSCN. They react to produce the blood-red complex [Fe(SCN)]2+. Fe3+ + SCN- ( [Fe(SCN)]2+ The equilibrium constant expression may be expressed as: K = [pic] You will prepare a series of standard solutions that contain known concentrations of [Fe(SCN)]2+ and will determine
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2.0 Kinematics of Linear motion is defined as the studies of motion of an objects without considering the effects that produce the motion. There are two types of motion: Linear or straight line motion (1-D) with constant (uniform) velocity with constant (uniform) acceleration‚ e.g. free fall motion Projectile motion (2-D) x-component (horizontal) y-component (vertical) 2 Learning Outcome: 2.1 Linear Motion (2 hour) www.kmph.matrik.edu.my At the end of this chapter
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