determine the reaction time of the test participant and using the subtractive method identify the selection time and identification time of the participant. The experiments had one participant who participated in a total of 6 experiments; two experiments required a simple reaction with a single stimulus and 4 experiments that required a more complicated reaction. Keywords Subtractive method – the procedure of estimating the time it takes to perform various cognitive operations. Simple reaction – this
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SN1 Reactions For SN1 reactions it’s important to have a good leaving group because this reaction occurs in two steps. Because alcohol is such a poor leaving group it needs to be helped by silver nitrate to help promote the ionization of the alkyl halide. This helps form the products of the SN1 reaction. 2-chlorobutane This reaction didn’t occur because the carbocation isn’t stable enough for an SN1 reaction. 2-bromobutane This reaction occurred in 32 seconds. This reaction occurred quickly
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Aldol In this preparative lab‚ an aldol (trans-p-anisalacetophenone) was produced from the reaction between p-anisaldehyde and acetophenone with the presence sodium hydroxide. The reaction also showed the importance of an enolate and the role it played in the mechanism. Sodium hydroxide acts as a catalyst in this experiment and is chosen because of its basic conditions and pH. The acetophenone carries an alpha hydrogen that has a pKa between 18 and 20. This alpha hydrogen is acidic because of its
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Properties and Reactions of Hydrocarbons Abstract Introduction Hydrocarbons are organic materials that contain only carbon and hydrogen atoms‚ these molecules can be saturated or unsaturated and acyclic‚ cyclic‚ or aromatic. In this experiment we used a variety of methods to examine the physical and chemical properties of hydrocarbons. The first experiment we tested a variety of solvents to see if they dissolved our alkane (Decalin). One would expect that non-polar solvents will dissolve
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How does the dramatist make Ananse an interesting character? In the play ‘The Marriage of Anansewa’ by Efua Sutherland‚ she presents a character‚ George K. Ananse. He’s admirable and interesting because he has the ability to think quickly on his feet in situations that’s others may find sticky. Sutherland also presents him as cunning in his intentions but he only wants what’s best for his daughter- Anansewa‚ whom he does all of this for; out of his love for her. Sutherland brings Ananse’s character
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Coursework Rates of Reaction Research The rate of reaction tells us how quickly a chemical reaction takes place. It is important for people in industry to know how fast a reaction goes. They have to know exactly how much of their product they can make each hour‚ day or week. In a shampoo factory‚ the rate might be 100 bottles per minute. We can’t work out the rate of a reaction from its chemical equation. Equations can only tells us how much product we can get. They don’t say how quickly
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BIOL2220 Lab 3: Hill Reaction Introduction In 1937‚ Robert Hill discovered that isolated chloroplasts can generate oxygen when they are illuminated in the presence of a suitable electron acceptor‚ even in the absence of carbon dioxide. This finding was a landmark in the study of photosynthesis because it established that the source of the electrons used in the light reactions is water. It also confirmed that the released oxygen is derived from water instead of carbon dioxide. In chloroplasts
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What changes did Sanger describe in married relations in recent generations? Marriage was synonymous with maternity. But the pain‚ the suffering‚ the wrecked lives of women and children that such a system caused‚ show us that it did not work successfully. Like all other professions‚ motherhood must serve its period of apprenticeship. What changes did Sanger hope would come about if unplanned pregnancies still occur in the United States? Sanger hoped if unplanned pregnancy could be prevented
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Arranged Marriages “Marriages are made in heaven and consummated on earth.” This phrase is on eighty percent of wedding cards invitation‚ but never on a divorce documents. Have you ever thought why? People from different cultures have their own perspective. Some believe that‚ arranged marriages last longer than love marriages‚ as the elder members of the family choose their spouses‚ who are experienced. The traditions of arranged marriage have been continued for a long time in the family history
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Gay Marriage Outline for Speech or Essay Specific Purpose: To educate and persuade my audience. Central Idea: That homosexual couples should be allowed to get married. Introduction I. How many people have always dreamed of getting married? A. I know as a little girl I always dreamed of having a wedding of my own‚ but that dream of mi... Premium 832 Words 4 Pages Gay Marriage Rights (Persuasive Essay) After the legalizations in Massachusetts and‚ most recently‚ California‚ gay marriage has been
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