"Vapor pressure and enthalpy lab" Essays and Research Papers

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    The Pressures of Guilt

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    The Pressures of Guilt Everyone sins. It is an inescapable fact. The magnitude of guilt for these sins‚ however‚ depends upon the creed‚ religion‚ or ideals of the sinner. In both The Crucible‚ by Arthur Miller‚ and The Scarlet Letter‚ by Nathaniel Hawthorne‚ readers see the effect of the Puritan faith on guilt. Strong‚ as well as weak‚ characters face guilt in each book. Abigail and Dimmesdale take a coward’s way out‚ while Hester and Proctor wrestle with their guilt. By upholding the strictures

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    Experiment 5 In the first part of this lab‚ the objective was to get the molar concentration of sodium hydroxide by using the secondary standard‚ sodium hydroxide solution with the primary standard‚ potassium hydrogen phthalate. With this information‚ we could create a second derivative plot‚ which can be used to obtain the exact concentration of the secondary standard‚ sodium hydroxide. Also‚ the indicator can give us these results along with the end points and with the readings from the pH meter;

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    Peer pressure

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    Peer pressure Peer pressure is influence that a peer group‚ observers or individual exerts that encourages others to change their attitudes‚ or behaviors to stratify to group standard. It also might encourage others to have bad attitude and behaviors for example‚ smoking‚ alcohols‚ drugs‚ etc. Like most people‚ you already know that smoking is bad for your health. But do you really understand just how dangerous smoking really is? Tobacco contains nicotine‚ it’s too high addictive drug that makes

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    Introduction The reaction between zinc and copper (II) sulphate is endothermic. If an excess of zinc powder is added to a measured amount of aqueous copper (II) sulphate in a calorimeter and the temperature change is recorded over a period of time‚ the enthalpy change of the reaction can be experimentally determined. Assumption 1. Mass of H2O in 100cm3 of CuSO4 solution is 100g 2. Specific heat of solution is 4.18 kJ kg-1 K-1 which is the same as the specific heat of water 3. Heat evolved in

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    Pressures To Conform

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    Pg. 1. Value #1 Community After over fifty years‚ the value of Community is still important to me. I learned‚ very young‚ how a community can pull together as individuals or groups in order to help resolve problems. As a young boy‚ I came to realize that a community‚ no matter how small‚ was like having lot’s of relatives‚ some who I hadn’t met yet‚ others who I hardly knew‚ but most who I felt would help or support others in the community. I see this value as being a necessity in

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    osmotic pressure

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    Homeostasis literally means “same state” and it refers to the process of keeping the internal body environment in a steady state‚ when the external environment is changed. The importance of this cannot be over-stressed‚ as it allows enzymes etc to be ‘fine-tuned’ to a particular set of conditions‚ and so to operate more efficiently. Much of the hormone system and autonomic nervous systems is dedicated to homeostasis‚ and their action is coordinated by the hypothalamus. In Module 2 we saw how

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    Title : Expt.1 Determination of the enthalpy (heat) of reaction of a monobasic acid with sodium hydroxide Experiment no : 1 Experiment title : Determination of the enthalpy (heat) of reaction of a monobasic acid with sodium hydroxide Objectives: 1) To understand the enthalpy chemistry. 2) To determine the calorimeter constant. 3) To determine the enthalpy reaction of acid-base reactions. 4) To study the exothermic reaction. Apparatus and Materials : * Dewar flask

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    This laboratory was performed to find the temperature change‚ heat of reaction‚ and enthalpy change for neutralization reactions. The temperature change was found by subtracting the initial temperature from the final temperature obtained. Heat of reaction is negative heat of solution. Heat of solution was found by using the formula qsolution = mCsΔT (m= mass; Cs= 4.184 J/g°C; and ΔT = change in temperature). The enthalpy change was found by dividing the heat of reaction by the number of moles of H2O

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    Colligative Properties & Osmotic Pressure Background: Important terms to study from this lab assignment are colligative properties‚ membrane permeability and osmotic pressure. First‚ colligative properties are “those of a solution that depend solely on the number of solute particles present‚ not the identity of those solute particles. These properties include: vapor pressure lowering‚ boiling point elevation‚ freezing point depression‚ and osmotic pressure” (p. 17 lab manual). In this experiment freezing

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    • Redox‚ Group 2 and Group 7 Unit 1 Exam – January 2013 – 1 hour – 90 UMS – 30% of total Unit 2 – Spring Term 2013 • Basic Concepts in Organic Chemistry • Alkanes and Alkenes • Haloalkanes and Alcohols • Enthalpy Changes • Rates and Equilibrium • Modern Analytical Techniques • Chemistry of the Air • Sustainability Unit 2 Exam – May 2013 – 1 hr 45 mins – 150 UMS – 50% of total Unit 3 – Autumn Term 2012 and Spring Term

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