Sodium borohydride Reduction of Benzil Introduction: The Purpose of this experiment is for the students to learn how to use sodium borohydride to reduce benzil to its secondary alcohol product via reduction reaction. This two-step reaction reduces aldehydes by hydrides to primary alcohols‚ and ketones to secondary alcohols. In order for the reaction to occur and to better control the stereochemistry and yield of the product‚ the metal hydride nucleophile of the reducing agents such as LiH‚ LiAlH4
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Also known as "benzoate of soda‚" sodium benzoate is an FDA-approved‚ polyunsaturated fat that has been used by food manufacturers for over 80 years to inhibit microbial growth. As a food additive it is used as a preservative‚ effectively killing most yeasts‚ bacteria and fungi. Sodium benzoate is effective only in acidic conditions (pH < 3.6) making its use most prevalent in foods such as preserves‚ salad dressings (vinegar)‚ carbonated drinks (carbonic acid)‚ jams (citric acid)‚ fruit juices (citric
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The World’s Smallest Cottage According to my mother‚ everyone has to go through trials at some point in their life. For me‚ I suppose one of my trials was being the middle child and only girl of five children. I don’t know why I was stuck with four brothers‚ but sometimes life just decides to whack you in the face doesn’t it? At the moment‚ I was squished in the car between my older brothers Davis(the smartest)‚ Finn(an annoying nuisance)‚ and my younger brothers‚ Michael whom we called Mike(a real
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Aubree Correll Monday/Wednesday 12:15-1:30 The Negative Effects of Bullying Specific Purpose: To persuade people that bullying has a negative effect on children. Thesis/Central Idea: To truly understand the effects of bullying it is important to learn about physical bullying‚ psychological bullying‚ and cyber bullying. Organizational Pattern: Statement of Fact: Topical I) Introduction A) Attention Getter: Have you or a loved one ever been bullied and had no one to come to the rescue
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Molecule Polarity PhET Lab A study of electronegativity‚ bond polarity‚ and molecular polarity Introduction: In this atomic-level simulation‚ you will investigate how atoms’ electronegativity value affects the bonds they produce. When two atoms bond‚ a pair of electrons is shared between atoms. Electronegativity is a measure of a single atom’s ability to hoard electrons shared in that bond. In this lab you will work diligently‚ at your own pace‚ to answer a number of questions. To begin‚ from
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book is being recommended for background reading. PAPER 2. (Literature in English) DRAMA : As You Like It : Shakespeare (edited by Roma Gill‚ Oxford University Press) OR Loyalties : John Galsworthy (edited by G.R. Hunter) PROSE: At least one of the following: (i) A Treasure Trove of Short Stories: Compiled and Edited by S. Chakravarthi (Frank Bros. & Co.) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. An Astrologer’s Day : R.K. Narayan Dust : ‘Saki’ (HH Munro) The Postmaster : Rabindranath Tagore
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Weight stigmatization in the workplace seems as such an unlikely environment for discrimination‚ is what I believed. I thought the workplace was about intelligence‚ collaboration and getting tasks completed. Following the reading‚ it was obvious that I was extremely naive to this subject. I assumed that adults in the workplace would be more open minded and less judgmental of the overweight population‚ considering it is about employment and not in any personal matter. Puhl and King (2013) reference
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always trying to lose weight: “Americans spend upwards of 60 billion dollars annually to lose weight”. Most weight loss tactics usually involve some type of quick way to shed those extra pounds such as diet foods‚ starvation‚ diet pills‚ supplements‚ eliminating certain foods‚ detoxes‚ etc. This list of ways to lose weight can go on and on‚ and they come with many different beliefs and misconceptions. People who lose weight in this manner have a tendency to gain the weight back‚ and often gain
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In order to find the formula of the copper chloride hydrate‚ we had to separate the compound to find the mass of water and copper. To begin this process‚ we evaporated the water and created an anhydrous compound‚ meaning we were left with only CuxCly. By calculating the weight of both the anhydrous and the hydrated compounds‚ we could conclude that the difference in the weights was the weight of the H2O. From this we were able to calculate the percent composition of CuxCly and H2O (see Calculations:
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tests with the Identifying Nutrients Gizmo™. 1. Below the Food samples label‚ drag tube A into the Food sample holder. Below the Benedict test‚ click the Test button. The Benedict test is a test for monosaccharides; simple sugars like glucose or fructose (fruit sugar). In contact with monosaccharides‚ the Benedict solution turns from blue to pink. Does Sample A contain monosaccharides? _________ Note: Disaccharides such as sucrose (table sugar) and lactose (milk sugar)
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