The objective of the experiments is to see if mold will grow on bread if it has water. Molds are found everywhere. They are a type of microscopic fungi that lives on organic matter. They can be found both indoors and outdoors. No one knows how many species of fungi exist but estimates at least three hundred thousand or more. they have been on this earth for millions of years and believe to grow where there is moisture. According to the U.S.D.A eating bread with mold can cause allergic reaction and
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In this experiment‚ we planted bean plants and put stress on them by rubbing them a certain amount of times a day. This was to see how they might survive in a windy area or in an environment where they might constantly be touched or moved around. The bean plants were
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following event comparable to the assassination of the Archduke Franz Ferdinand? The tragic life of a street vendor Al Jazeera travels to the birthplace of Tunisia’s uprising and speaks to Mohamed Bouazizi’s family. Yasmine Ryan Last Modified: 20 Jan 2011 15:00 GMT In a country where officials have little concern for the rights of citizens‚ there was nothing extraordinary about humiliating a young man trying to sell fruit and vegetables to support his family. Yet when Mohamed Bouazizi
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is still open to controversy. Does a dose of caffeine heighten one ’s mental performance‚ or does it achieve the opposite? Many experiments have already taken place in order to discover how caffeine effects a person ’s mental performance. In the Radiological Society of America ’s annual conference in December of 2005‚ Florian Koppelstatter reported an experiment in which he used functional magnetic resonance imaging(fMRI) to determine how coffee effects brain activity. Subjects were then given
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to determine the solubility constant of calcium hydroxide. But‚ there are few limitations in solubility constant concept‚ like the Diverse Ion effect and the Common ion effect. Sources of error probably were the assumptions made throughout the experiment and can be explained further by the limitations of the solubility constant. ------------------------------------------------- ------------------------------------------------- Introduction In a reaction where a slightly soluble ionic solid
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level. The objective of this experiment is to study the characteristic of four different types of membrane. The membranes used in this experiment are polyamide film ( AFC 99 ) as membrane one ‚ polyamide film ( AFC 40 ) as membrane two ‚ cellulose acetate (CA 202 ) as the third membrane and PVDF (FP 100 ) that act as the fourth membrane. In order to identify the characteristic of all four membranes‚ experimental procedures should be done. The variable for this experiment is the membrane maximum inlet
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20 Medieval superstitions 1. It was general belief that witches were associated with bats and that if someone spotted a bat‚ it was considered bad luck. 2. Another superstition was that they thought horses repelled witches; therefore‚ witches rode brooms or pitchforks instead. 3. If a child rode on the back of a bear‚ he or she would be protected from whooping cough. 4. The lucky horseshoe came from the belief that horses repelled witches. They would hang horseshoes that were removed naturally
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Social psychologist‚ Stanley Milgram of Yale University conducted a controversial and influential experiments on study of the effect of punishment on learning. Nearly 1000 people participated in Milgram’s 20 experiments. The participants assigned to be a learner and a teacher. Milgram created an electric ’shock generator’; it ranged from 15-450 volts. The teachers were given a task to teach and then test the learner on a list of word pairs. For the first wrong answer‚ the teacher will flip the switch
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The Pareto principle (also known as the 80–20 rule‚ the law of the vital few‚ and the principle of factor sparsity) states that‚ for many events‚ roughly 80% of the effects come from 20% of the causes.[1][2] Business-management consultant Joseph M. Juran suggested the principle and named it after Italian economist Vilfredo Pareto‚ who observed in 1906 that 80% of the land in Italy was owned by 20% of the population; he developed the principle by observing that 20% of the pea pods in his garden contained
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Experiment 4A – Counting Atoms in a Chemical Reaction Purpose: The purpose of this lab is to create an experiment where zinc reacts with hydrochloric acid in order to find out the number of moles and atoms of zinc reacted. This can be accomplished by weighing the sample before and after the reaction with hydrochloric acid. Data: Material Mass in grams (g) Initial mass of dry beaker 49.37 Initial mass of dry beaker + zinc 51.03 Initial mass of zinc 1.66 Final mass
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