EXPERIMENT 1: REACTIONS OF ENOLATE IONS WITH CARBONYL GROUPS Aims In this experiment we used two techniques for the reactions of enolate ions with carbonyl groups. One technique used was Doebner reaction and the other technique used was Claisen-Schmidt reaction. Therefore the aim of this experiment is to synthesize trans p-methoxycinnamic acid and to synthesize dibenzalacetone via an aldol condensation reaction between acetone and benzaldehyde. The products would be recrystallized using ethanol
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involves the process of distillation. Distillation is the separation of volatile substances mixed with nonvolatile substances by boiling the mixture to alter the phase of the volatile substance. The researchers used the simple distillation set up to conduct the experiment. 25 ml of The Bar Vodka was used and 7 ml of distillate was collected before a temperature of 95 degrees Celsius was reached. Collected distillate was then subjected to a flammability test to confirm ethanol content. The percent ethanol
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tested in this study? (i.e.‚ What is the question that researchers are trying to answer across the two experiment?) (2 pts) The general hypothesis tested in this study concerns the effectiveness of classical moral storytelling as a promoter of virtues in 3- to -7- year-old children. Specifically‚ researchers aimed at determining how this type of fiction might educate children on honesty‚ as well as warn them about the consequences of lying. For this reason‚ they conducted two experiments. In the
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Why is Columbia the School for You? Why is Columbia the school for me? At first glance‚ this question seemed easy to answer - a simple question – and maybe it is. Perhaps the question is simple and I am complicated‚ so stubborn and “unique” that I could not accept the more obvious answers: the prestige‚ the history‚ the financial opportunities that will come my way if I apply myself there. How proud I would be to have “Columbia Graduate” on my resume! But no‚ no these reasons are simply not adequate
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lakes and rivers. The Black Rat (ship rat) is one of the worst known invasive species. They have a close relationship to brown rats and have similar characteristics. The Black Rat initially originated in Asia during the 14th century. It struck Europe from being carried in by ships‚ slowly spreading to different continents making the Black
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Rats! Most people would only see these little critters as pests. But‚ did you know rats have been domesticated rats for over hundred years. These domesticated rats contribute so many things for the advancement of mankind. Not only are domesticated rats used for research in medical science but they are also kept as pets by many people. Yes‚ pets‚ there are actually people who keep rats as pets. Domesticated rats are great pets for adults and even children. Rats are extremely intelligent pets. They
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WHY DO YOU WANT THIS JOB? “I am certain that I can make an impact and bring benefit to the company and to myself. This job would allow me to use my proven skills to bring great value to this company( specific example of how your skills bring value! ). I applied for this job since it matches my skills and abilities‚ my previous experience and positions. This job is a logical step forward for me and if I was appointed then I feel you would not be disappointed.” WHY DO YOU WANT THIS JOB
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of Food Preference in Rats after Initial Taste Preference ---------- --------------- Abstract Rats are animals known to be neophobic‚ fearful of new experiences and tend to show behaviors of avoidance to eat novel foods. However‚ there are high chances that rats will eat novel foods if they have reasons to expect that the food is safe to consume and not harmful. The social transmission of food preference paradigm (STFP) was tested in 28 male rats that were about 5 months old. The
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Rats in the Cellar The last thing any homeowner wants to discover is that they have rats in the cellar (basement)‚ especially since the rodents are harbingers of disease. They also cause safety hazards due to their natural gnawing instinct and can chew through electrical wires‚ which can result in the house catching on fire. Norway rats’ habit of tunneling under foundations can potentially cause structural damage to the home‚ causing thousands of repair dollars. Fortunately‚ homeowners have options
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Experiment 2: IDENTIFICATION OF UNKNOWNS BY TLC AND MP IN COMBINATION Introduction: Thin layer chromatography (TLC) is one of the most valuable techniques in organic chemistry. This is a best method of separating and identifying mixtures of two or more compounds. The separation is accomplished by the distribution of the mixture between two phases: one that is stationary and one that is moving or mobile. Chromatography works on the principle that different compounds will have different
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