CHROMATOGRAPHY _TOPIC_ : 7.2 _RESEARCH QUESTION:_ What is chromatography? How many pigments are there in a plant? How the different pigments in a plant can be separated? _APPARATUS_ : Please refer to the handout _MATERIAL_ : Please refer to the handout _METHOD_ : Please refer to the handout _DATA COLLECTION_: Coloured band Pigment front distance (± 0.05cm) Solvent front distance (± 0.05cm) Green 11.7 13.0 Yellow 12.5 13.0 _DATA PROCESSING_: Coloured band Pigment
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AIDS: Is it a Modern Plague? In some parts of the world there are still wars being fought and dictators in power. There are societies which consider themselves at the peak of evolution and progress. They are able to create state of the art automobiles‚ luxurious homes‚ efficient and organized industries‚ complex computerized machinery and atomic weapons. Many societies are governed by a democratic system which herald a belief in freedom. All societies‚ regardless of their political
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After viewing the documentary film‚ ’Out of Control: AIDS in Black America’‚ I was shocked and vividly awaken to how this disease has reached epidemic portion in the black community of this country‚ and how it has been ignored by both black and white leadership at all levels of community involvement and well as at governmental levels . Phill Wilson‚ executive director of the Black AIDS Institute in Los Angeles says that many of our black leaders and celebrities have acknowledged and supported to
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FIRST AID FOR DOGS The aims and rules of first aid First Aid treatment is based on three aims and four rules. Aims 1. To preserve life 2. To prevent suffering 3. To prevent the situation from deteriorating Rules 1. Don¡¦t panic 2. Maintain airway 3. Control haemorrhage 4. Contact a vet The limitations of first aid The goal of first aid is to help the patient as best as you can - no more than that. First aid should only be used to preserve life until a veterinarian can be found
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The financial aid process works like this: students and their families are obligated the pay the “Expected Family Contribution” (EFC) of their education based on a families income and other financial assets percentage of their fees. After determining the families EFC‚ FAFSA (Free Application for Federal Student Aid) breaks down what is left into loans‚ grants‚ and work-study. All loans must be paid back whereas grants
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‘The best teaching aid is a piece of chalk’ Discuss this point of view with reference to the alternatives. What are the best teaching aids? Every Teacher knows there is a place for chalk or white board pens in the classroom‚ every good teacher knows that chalk is not the only effective teaching aid in the classroom. There are three types of teaching in my opinion; regurgitating information word for word from text books and lesson plans‚ teaching using PowerPoints and so projecting‚ and finally
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What is visual aids? And what does visual aids helps us with our presentation? Visual aids is the use of object or photographs to help the audience understands what you’re going to present. It helps people to find a speaker message more interesting‚ grasp it more easily‚ and retain it longer when it is presented visually as well as verbally. Good afternoon ladies and gentlemen today we are going to talk about using visual aids ‚ let me introduce my fellow team mates this is nigell ‚ chun chyn and
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HIV/AIDS has been named a global epidemic with its toll being felt significantly especially in Africa. It has been a major cause of death in the world; it also continues to be a public health concern. It poses a risk to future generations with villages being wiped out due to its impacts (Iliffe‚ p.47). The most affected generation being the most active age group leaving the elderly and aged to look after the young. Widows and orphans have been a major occurrence in many villages and they struggle
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The average American lives on $140 a day compared to 80% of the population of the world living on less than $10 a day (Alters). There is definitely a need for foreign aid. Even though some people think foreign aid is near useless because money given doesn’t last long‚ letting people suffer is wrong‚ the price of not helping is way greater than the results of not helping‚ and all arguments are basically made void if people think about how helping is great if it even only makes one person’s life better
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Gas chromatography is the common method used for the biogasoline analysis. Biogasoline catalytic cracking process requires detailed qualitative and quantitative analysis of the hydrocarbon composition of its oil and fraction. In this analysis‚ their fractional composition‚ saturated vapor pressure‚ density and antiknock rating will be investigated. By knowing the qualitative and quantitative composition of the gasolines‚ the content of n-paraffin‚ isoparaffin‚ aromatic‚ naphthene‚ and olefin (PIANO)
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