holidays. It is a holiday that you celebrate with your friends and family. I love Thanksgiving for many reasons. One of the reasons I like it is because of the five day weekend. The five day weekend really helps because students need to rest and most students do not sleep enough which makes them unhealthy. I like how most teachers do not give homework over the break so students can rest and spend time with their family. I think people still like Thanksgiving even if they don’t celebrate it because
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Supplier Base Reduction Supplier Base Reduction Department of Industrial Management and Logistics Division of Engineering Logistics Planning for Supplier Base Reduction - understanding Supplier Base Reduction’s role in purchasing A case study at Alfa Laval AB Authors Fabian Karlsson Sebastian Eriksson-Ritzén Supervisors Ala Pazirandeh Markus Ekendahl ii Acknowledgements This thesis completed our Master of Science in Mechanical Engineering with specialization in Logistics
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Experiment #7: Acids‚ Bases and Salts Mabag‚ Viannery D.‚ Mangune‚ Paolo D. Chem 14.1‚ MAB1‚ Ms. Angelyn del Rosario March 8‚ 2010 I. Abstract The experiment allowed students to explore different electrolytes and classify them into acids‚ bases and salts by using different indicators or by measuring the pH levels of each. The experiment also helped students classify different substances through their conductivity properties. The preparation of a 1 M stock solution from NaOH pellets diluted to a
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Acid and Base Titrations: Preparing Standardized Solutions Introduction: This experiment focuses on titrations of acids and bases. A titration depends on addition of a known volume of solution and is a type of volumetric analysis. Many titrations involve either acid-base reactions or oxidation-reduction reactions. In this experiment we do one of each. We monitor the pH of the reaction with the use of a color indicator. We also learn about the standardization of bases (NaOH) and acids (HCl) which
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acculturation The process by which people in one culture or subculture learn to understand and adapt to the norms‚ values‚ life styles and behaviors of people in another culture or subcultures. For example‚ acculturation is the process by which a recent immigrant learns the way of life of the new country. Library services and materials facilitate this process. acquisition value The users’ perception of the relative worth of a product or service to them. Formally defined as the subjectively weighted
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Worksheet - Acids‚ Bases and Salts 1. I am pure water. When heated my pH (increases‚ decreases)‚ because more of my water molecules dissociate. 2. I am a 0.020 M solution of weak acid‚ HA. If I only dissociate to the extent of 1.50%‚ what is the value of my Ka? 3. I am a 0.20 M solution of hydrocyanic acid‚ HCN‚ with a Ka of 4.93 x 10¯ 10 . What is my pH? 4. I am a buffer made from 0.10 M acetic acid and 0.15 M sodium acetate. If the Ka for acetic acid is 1.77 x 10¯ 5 ‚ what is my pH? 5. I am a substance
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Aqueous Acid/Base Chemistry Resources: Harris ‘Quantitative Chemical Analysis’ Review: Pure water has a pH = 7 Autodissociation: H2O (( H3O+ + OH- K = [H3O+][OH-]/[H2O] -log[H3O+] = 7 [H3O+] = 10-7 M = [OH-] [H2O] = 55.56 M K = 1.8 x 10-16 ; pKa = 15.74 pKa is the acid dissociation constant; low pKa (strong acid‚ high pKa (weak acid we can also write Kw = [H3O+][OH-] Kw = 10-14 In water‚ pH + pOH = 14 pH scale Strong
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18.1.4 – 18.1.6 CALCULATIONS INVOLVING ACIDS AND BASES Review of Important formulas pH = ‐ log10[H+] [H+] = 10‐pH pKa = ‐ log10 Ka Ka = 10‐pKa pOH = ‐ log10[OH‐] [OH‐] = 10‐pOH pKb = ‐ log10 Kb Kb = 10‐pKb The ionic product of water = Kw = [H+] x [OH‐] = 1.0 x 10‐14 mol2 dm‐6 at 298 K The expression varies with temperature
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Hey there! I think what their grandma meant when she said "this is costing y’all a fortune" was that it is probably costing them a lot to pay for the heat to keep somewhat warm in Flint. She probably doesn’t have to really worry about her electricity bill being high because she lives in AL where it is much warmer. And about the TT AB-700..well we found out what that was in the next chapter. I guess it was their version of a radio back in the day. A record player that works in the car! In regards
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Católica de Puerto Rico Recinto de Mayagüez Colegio de Administración de Empresas Name:____________________________ Date:________________________ Student #: ________________________ Course: FINA 315 Sec.: _________ Partial Exam # 1(Chapter 1 & 2) I. Select the correct answer: 1) The part of finance concerned with design and delivery of advice and financial products to individuals‚ business‚ and government is called A) Managerial Finance. B) Financial Manager. C) Financial Services. D) none of
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