Analysis of Alum‚ AlK(SO₄)₂ •12H₂O Purpose The purpose of the experiment is to confirm whether the compound is Alum. Introduction Percent composition is defined as part divided by whole multiplied by 100. Water of hydrogen is defined as the amount of water produced into a molecule prepared in an aqueous solution. Molecular formula indicates the actual numbers and type of atoms in a molecule (notes). Procedure The procedure in this experiment is to determine melting point and mole ratio of
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Conclusions: We learned that some nasty stains can come out with some unorthodox products. We used on our stain Isopropyl alcohol (rubbing alcohol)‚ bleach‚ and shout. The product that did the best at pulling out stains was the Isopropyl alcohol. Isopropyl alcohol is a clear‚ colorless‚ flammable‚ mobile liquid‚ (CH3)2CHOH‚ used in antifreeze compounds‚ in lotions and cosmetics‚ and as a solvent for gums‚ shellac‚ and essential oils. It did great job at pulling stains right out of the cloth. This
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LABORATORY REPORT 4 PREPARATION OF ALUM FROM ALUMINUM METAL Huy Nguyen October 2nd‚ 2012 The objective of the laboratory is to synthesize alum (KAl(SO4)2.xH2O) from aluminum powder and to determine the proportion of water in the alum crystals. Alum is a product from the reaction between potassium hydroxide and sulfuric acid. The reaction include several steps‚ as followed: Aluminum powder reacts with potassium hydroxide to generate Al(OH)4- ions and release hydrogen. 2 Al(s) + 2 KOH(aq)
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The purpose of the first part of the experiment was to produce a chemical compound which was the alum crystals by using aluminum‚ potassium hydroxide and sulfuric acid. After the compound was present‚ the purpose of the second part of the experiment was to make sure that the compound that was formed in the first half of the experiment was actually alum. Some of the experimental techniques that were used in this experiment was filtration using the Büchner funnel vacuum filtration‚ recrystallization
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General Conclusion: These experiments helped us understand the importance of molecular polarity. This knowledge can now be used for the future to predict‚ for example‚ if two substances will mix or not. We can now do this by knowing that polar substances only mix with other polar substances‚ while non-polar substances only mix with other non-polar substances. This concept can be used to predict if a substance will be soluble in a specific solvent. The concepts of solubility and conductivity of a
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Conclusion Shagun Mistry According to the experiment‚ the average normal heart rate of Daphnia is 20 heart beats per 12.94 seconds. There were six total trials done for Normal Heart Rate with 2 Daphnia (3 Trials each). The aim of this experiment was to measure the effect of neurotransmitters on the heart rate of Daphnia. When the adrenaline was added
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The Art of the Conclusion The conclusion of an essay should establish a sense of closure or completeness that leaves the reader with lingering thoughts about the topic. Each writer has their own approach in composing a conclusion that they feel solidifies their argument; every approach makes different demands of a reader because of the moves the writer chooses to make. The essays “How to Tame a Wild Tongue” by Gloria Anzaldua‚ “Translating Translation” by Alberto Alvaro Rios‚ and “Joyas Voladoras”
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could help people. This could also help with learning new things. Listening to their opinion of their argument can even change the earlier opinions someone had. Seeing from another person’s point of view can help people with thoughts‚ understanding‚ conclusion. Someone’s point of view can make people’s thoughts work more. Trying to see from someone’s view will make people think of different ways to view what the other person sees. The thoughts would be why‚ when and where. With so many thoughts someone
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Conclusion Worksheet Instructions: Copy and paste the following text into a document or create a document that contains the same information. Respond to the following with complete sentences. 1. Copy and paste the introduction to your essay in the space below. King’s famous “Letter from Birmingham Jail‚” was written in response to a public statement of concern and caution issued by eight white religious leaders of the south. Even though King felt that they were men of “genuine good will‚” he didn’t
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Introductions and Conclusions Introductions and conclusions play a special role in the academic essay‚ and they frequently demand much of your attention as a writer. A good introduction should identify your topic‚ provide essential context‚ and indicate your particular focus in the essay. It also needs to engage your readers’ interest. A strong conclusion will provide a sense of closure to the essay while again placing your concepts in a somewhat wider context. It will also‚ in some instances
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