How sodium chloride concentration affects the germination‚ growth and development of Brassica rapa. Osumi‚ K.‚ Nihei‚ B.‚ Takanishi‚ K.‚ Nakamura‚ C.‚ Warehime‚ R. Period 2. 03/05/17 Introduction: To have a successful germination‚ the plant seed needs a sufficient amount of water and oxygen present. Other conditions include room temperature‚ and the amount of light intake. Hydration of a seed‚ is an essential step for seed germination (Martínez-Andújar‚ 2014). Plants tend to germinate better in
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drink enough water to keep our bodies healthy. After all‚ the human body is composed of mostly water‚ with adults averaging 55% - 60% water and babies averaging closer to 75%. The human brain is actually made up of close to 70% water (why you feel foggy headed when you are dehydrated)‚ and the lungs are closer to being 90% water. Beyond ensuring you drink plenty of water‚ it’s equally important‚ if not more so‚ to ensure you are drinking quality water. Sadly‚ high quality drinking water is hard to
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Abstract Water “hardness” was analyzed in this experiment‚ through the determination of CaCO3 concentration. This was achieved by the titration of an unknown solution using a standardized 0.1M EDTA‚ and addition of Eriochrome Black T to the unknown‚ to indicate the endpoint of the titration. The average concentration of CaCO3 obtained was 1034 ppm‚ with a standard deviation of 2.4495. The results indicate that the unknown solution can be considered as hard water. Introduction The hardness
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Speech – Outline Tap and Bottled Water Goal: To persuade the audience that: 1. Bottled water is not better than tap water 2. They should start using reusable water bottles Introduction Bottled water is believed by many to be cleaner and safer than tap water… While in many cases bottled water is clean and kept at a good quality‚ it is almost equal in most aspects with tap water 1. Costs and value of bottled water Basically‚ I would like to convince you that bottled water is not all it’s made
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experiment was conducted to work out the concentration of the chloride ions in the school swimming pool water and to see if it fits in the required range of concentration of chloride ions in the swimming pool water. This was done by titrating a small sample of the school swimming pool water with silver nitrate‚ which would form a white precipitate of silver chloride. The equation of this process is: The end point of the titration (when all of the chloride ions have been precipitated) was determined
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INVESTIGATION #2 DETERMINATION OF THE WATER OF CRYSTALLISATION April 4‚ 2012 OBJECTIVE: Chemical compounds that contain discrete water molecules as part of their crystalline structure are called hydrates. Hydrates occur quite commonly among chemical substances‚ especially among ionic substances. More often than not‚ such compounds are either prepared in‚ or are recrystallized from‚ aqueous solutions. Hydrates exist for ionic compounds most commonly‚ but hydrates of polar and non polar covalent molecules
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Argumentative essay Bottled Water The World wants to go green‚ but how can we do that without preventing minor harms? One of the greatest harms to the world is pollution caused by humans. Most of the plastic materials used by humans are left to pollute. Bottled water is one of the greatest plastic materials produced. They say that bottled water is safer‚ more convenient‚ and helps provides jobs to workers in many ways. Bottled water maybe a little cleaner than tap water‚ but purity comes with a
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Introduction I. Through a show of hands how many of you drink one water bottle a day? II. The use of bottled water is harmful for both humans and the environment due to false judgment‚ high cost and the pollution it causes. III. For my topic I have done plenty of research from highly credible health sources such as Food and Water Watch and conducted an in depth audience analysis in class. I also came across informative and educational videos on YouTube where I learned plenty of information
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Materials: 1. 2 Plastic cups 2. Tap Water 3. Teaspoon 4. Bag of salt 5. Freezer 6. Clock 7. Paper 8. Pencil Procedures: 1. Take plastic cup and pour in one cup water in each 2. Take one teaspoon of salt and mix it in one of cups 3. Put both cups in the freezer 4. Observe. Conclusion: When salt is added to water it slows the freezing process down‚ therefore the freezing point of tap water is higher than the freezing point of salt water. Hypothesis: If... ‚ then.
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Sowman | Practical 7: Determination of Hardness in Water | | | | | 10/3/2012 | | Aim: To determine the different types of hardness and alkalinity found in the water by titration methods. This is used to calculate the concentrations of calcium and magnesium found in the water. Principles: The hardness of water is determined to provide a measure of the quality of water for household and industrial use. Hard water is not a health hazard. Drinking hard water contributes a small
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