conical flask and 3 drops of phenolphthalein indicator were added * A burette was filled with 0.2±0.02moldm-3 HCl * The HCl was titrated against the Na2CO3 and the data recorded in a table * The same procedure was repeated but this time using CH3COOH instead of HCl * The % of ethanoic acid was determined by titrating the standardized NaOH with it * Given that the % of ethanoic acid in this sample was 4%‚ the % error was calculated and a conclusion drawn. Results: Table showing
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Children sometimes grow up in dysfunctional families.A dysfunctional family is a family in which conflict‚ misbehavior‚ and often child neglect or abuse on the part of individual parents occur continually and regularly‚ leading other members to accommodate such actions. Most of the time‚children think that this situation is normal. A child may be unfairly blamed for the family’s dysfunction‚ and placed under even greater stress than those whose parents divorce.The recent death of a family member
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Imagine a class where one can have fun and learn a much needed skill--that class is English Composition I. I have met my goal of becoming a better writer during this class. I did it by evaluating myself and learning from my mistakes. During my time in English Composition I‚ I have improved my writing through the advertisement analysis‚ the comparative analysis‚ plus the narrative‚ and the argumentative essays. The first essay I wrote was an advertisement analysis. I chose three aspects that helped
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A Method to Determine Reasonableness and Feasibility of Noise Abatement at Special Use Locations I. INTRODUCTION Most states have policies in place that determine whether noise abatement is necessary and reasonable/feasible for Type I projects. These policies mirror federal guidance and apply to various land uses near the proposed project. Special land use facilities such as parks‚ churches and schools are included in the policy as far as when abatement may be necessary (i.e. the Federal Highway
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Acousmatic Composition: The Atomisation of Performance as Technological Consequence Introduction The mechanical capture and reproduction of sound first became achievable with the advent of the phonograph‚ and technology has progressed at an impressive rate since. The 100 years of the 20th century saw more technological advancement than in the thousand years that preceded it (the new century‚ a decade old‚ eclipsing the last). Recording of sound has been achieved in more and more ways;
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CHEM 3281 Experiment Seven Determination Of The Composition Of A Multi-Component Mixture By Spectrophotometric Analysis Objectives: 1.Solid sample handling 2.The composition of a three-component mixture will be assayed by dissolution of the soluble components in water and measurement of their individual concentrations by visible spectrophotometry. Text Reference: Handbook of Instrumental Techniques for Analytical Chemistry‚ Frank Settle‚ editor. Prentice Hall‚ ‚ Upper Saddle River‚ NJ 1997‚ Ch 25
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NAME:Casey Martin DATE:3-26-2014 PEB 1101 Lab 7: BMI/WHR and Body Composition Assessment Body Mass Index (BMI) Preparation Before weighing and measuring‚ be sure to remove shoes‚ all heavy objects in pockets‚ and heavy jewelry (necklaces‚ rings‚ piercings‚ grills‚ etc.). Instructions 1. Before stepping onto the scale‚ be sure that the scale is calibrated to zero. If not‚ ask for the instructor to zero the scale. Do not do it yourself. 2. Step onto the scale and have a partner
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Chemistry 2 Jorge Nuñez Ms. Principe / Period 2 February 8th‚ 2011 Aim: How are we going to determine the empirical formula of a compound? Do Now: 1) What is the percent by mass of oxygen in H2C2O4? H2 = 2(1) = 2 ; C2 = 2(12) = 24 ; O4 = 4(16) = 96 Gram Formula Mass = 90 Percentage of Oxygen = 6490 x 100 = 71% 2) Calculate the percentage of water: -Mass of empty crucible and cover = 11.7g -Mass of crucible‚ cover‚ and hydrate before heating = 14.9g -Mass of crucible
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Opiate addiction comes in many different forms of abuse with many different kinds of people. There are three types of characterized reasons which can keep a person adducted to the opiate like the physical dependency‚ psychological dependency and the social context of the dependency. First of all‚ opiate addiction occurs after long-term use of the opiate and that person becomes physically dependent on it. Dependence on the opiates drug alleviates physical pain and allows those suffering from
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Along with the developmet of mining machinery industry‚ there are so many knind of drying equipment‚ such as drum dryer‚ rotary dryer‚ coal slime dryer‚ salg dryer etc‚. But do you know which parts consist of slag dryer? Slag dryer or slag dryer is also a kind of rotary dryer. And slag dry is mainly composed of rotary cylinder‚ guide the wind equipment‚ high-speed scattered equipment‚ feed plate‚ the cleaning device‚ transmission device‚ conveying equipment‚ hot air equipment‚ reducer‚ supporting
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