(in the second centrifuge tube). Now wash (microscale) the combined extracts with saturated NaCl solution (5mL)‚ then with 10% aqueous potassium carbonate (5mL)‚ then with saturated NaCl solution (5 mL) again. Dry the organic layer with anhydrous sodium sulfate. Decant the organic layer into a small beaker and concentrate to roughly 0.2 mL by evaporation in the hood (do not apply heat!). If the sample goes to dryness‚ re-dissolve in hexane (0.2 mL). *Set aside a small amount of your crude
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In classical drama‚ plays followed the three unities of place‚ time and action. Each unity had its own set of specific rules. Othello follows these unities more closely than many of Shakespeare’s plays though the play does contain an interesting trick involving time. This "double time" as it has come to be called occurs when we consider how long Othello and Desdemona have been apart before he accuses her of adultery with Cassio. Seemingly‚ the two have had no chance to be together
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Chrysalids: "They could never have succeeded. If they had not brought down Tribulation which all but destroyed them; then they would have bred with the carelessness of animals until they had reduced themselves to poverty and misery‚ and ultimately to starvation and barbarism. One way or another they were foredoomed because they were an inadequate species." "When their conditions were primitives they could get along all right‚ as the animals can; but the more complex they made their world‚ the less
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Shakespeare there is many mentions of birds in the dialogue. As well it is one of the themes in this play‚ used as a metaphor to different examples‚ such as when the characters use the word fly as an expression of escaping or leaving. Furthermore the theme of birds is also used when speaking of specific birds having meanings‚ or birds in this play used to show pathetic fallacy. Specifically in act IV sense ii and iii there are various uses of the imagery of birds‚ such as Lady Macduff in her shock at
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Chapter 17—Alcohols and Phenols SHORT ANSWER Drawing Instructions: Draw structures corresponding to each of the given names. 1. Draw: cis-4-tert-butylcyclohexanol ANS: 2. Draw: 3-methyl-2-buten-1-ol ANS: 3. Draw: 2-phenyl-2-propanol ANS: 4. Draw: glycerol ANS: 5. Draw: 2‚ 4‚ 6-trinitrophenol ANS: IUPAC Naming Instructions: Provide proper IUPAC names. 6. Name: ANS: (E)-2-ethylbut-2-en-1-ol 7. Name: HOCH2CH2OH ANS:
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Name Naza Moore ID# 24120389 Lab# 2 Lab instructors Alecia Palmer and Donald Burke Course Instructor Maureen Wilson Lab Title Preparation of cyclohexene from cyclohexanol Aim Preparation of an Alkene by dehydration of an alcohol in the presence of a catalyst. Calculate the percentage recovery of products. Test for purity and identification of products. Abstract Cyclohexene and cyclohexanol are both colourless aromatic compounds. The major difference between the two is the presence
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unified towards a common goal. America just after the French and Indian war greatly lacked unity. Colonists saw that if they wanted to succeed as a nation they had to come together and become one. Once England began to unfairly tax and restrict the colonies colonists began to show rebellion towards the crown. Americans began to make their own goods to sell within the country. This just increased the unity in the colonies. Colonists were
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book by Roland Smith called “The Ghost Bird” and “Animal Distress Calls” by Eliot Schrefer? I’ll explain to you why I chose these two right now. Birds live in lots of many states over the world‚ but some species have become extinct and some are on the verge of extinction. In each passage they relate to birds in some way whether it have them being sick or extinct-or maybe that they could go extinct. “The Ghost Bird” and “Animal Distress Calls” have the same theme of
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Unity or Diversity Two of the poems which I found myself fascinated with are “Child of the Americas” by Aurora Levins Morales and “To live in the Borderlands means you” by Gloria Anzaldúa. These two poems talk about the pride of each of the author’s cultures and races. The authors do not want to make excuses for being the way they are but want to tell about the pride they feel for being the way they are‚ and they found no way to change themselves but show that history has made them the way they are
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English essay: Analyse how the writers of the two poems you have studied have developed an important theme? POEM 1: Still I Rise By: Maya Angelou You may write me down in history With your bitter‚ twisted lies‚ You may trod me in the very dirt But still‚ like dust‚ I’ll rise. Does my sassiness upset you? why are you beset with gloom? ’Cause I walk like I’ve
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