gain one electron and become a chloride ion. Chlorine readily reacts with metals to form chlorides‚ most of which are soluble in water. Chlorine also reacts directly with many nonmetals such as sulfur‚ phosphorus‚ and other halogens. Chlorine can support combustion; if a candle were to be thrown into a vessel of chlorine‚ it would continue to burn‚ releasing dense‚ black clouds of smoke‚ The chlorine combines with hydrogen of the paraffin‚ forming hydrogen chloride‚ and uncombined carbon is left
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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 by
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Universitatea POLITEHNICA București Facultatea de Inginerie in Limbi Străine Suspension Polymerization of Styrene Annual Capacity 80.000 t/year Advisor: Prof. Dr. Ing. Ec. L.M. Butac July 2014 Student: Moise Camelia Mihaela LITERATURE REVIEW............................................................................................................. 2 I.i. History of styrenic polymers ...........................................................................................................
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Experiment 4A: Determination of a Partition Coefficient for Benzoic Acid in Methylene Chloride and Water Experiment 4B: Solvent Extraction I: Acid-Base Extraction Using the System Benzoic Acid‚ Methylene Chloride‚ and Sodium Bicarbonate Solution Objective A: To accustom participants (students) to general procedures that are used to obtain a partition coefficient at the microscale level. We will gain experience in such practices as the transfer of microliter volumes of solutions with a Pasteur filter
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various soil water ratios and with or without calcium chloride. Method and Materials Samples of sedentary soil‚ 3:2 soil‚ sand‚ organic matter and compost‚ 100ml vials(x12)‚ bottle of distilled water‚ analytical balance‚ pH meter‚ 2 buffer solution of known pH‚ 0.25M calcium chloride solution. Results Table 1- Average pH measurement for the given soil/water ratio in both without 0.01M calcium chloride and with 0.01M calcium chloride for different soil types. Note: The groups having
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made from Polyvinyl Chloride (PVC). This material was made in 1872 by German chemist Eugen Baumann on accident. Polyvinyl Chloride is made with Chlorine (Cl) and ethylene. When these two are combined ( at extremely high temperatures) they create vinyl chloride monomer. The vinyl chloride monomer can then be polymerized to make polyvinyl chloride. Polyvinyl Chloride is then turned into what we call “synthetic leather”. Chlorine is found in the ocean water‚ as a part of sodium chloride (NaCl). It’s also
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(GABA) is a well-known inhibitor of presynaptic transmission in the CNS. 2. Explain: the structure of GABAA receptor complex and location of Benzodiazepine’s and barbiturate’s binding sites on GABAA receptors. a. The GABAA receptor complex have chloride channels associated with in the receptor (influx of Cl cause hyperpolarization causing CNS depression) b. In this isoform‚ the two binding sites for GABA are located between adjacent α1 and β2 subunits‚ and the binding pocket for benzodiazepines
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Metals and Non-metals Elements are divided mainly into two groups on the basis of physical and chemical properties – Metal and Non-metal. Metals: Part - I Physical Properties of Metals:- Hardness:- Most of the metals are hard‚ except alkali metals‚ such as sodium‚ potassium‚ lithium‚ etc. Sodium‚ potassium‚ lithium etc. are very soft metals‚ these can be cut using knife. Strength:- Most of the metals are strong and have high tensile strength. Because of this big structures are made using metals
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Case Study 1 1. Johnny has seen the words Sodium Chloride before in his science class with the periodic table. 2. Johnny couldn’t find Sodium Chloride on the periodic table because Sodium Chloride is a molecule made up of two atoms: Sodium and Chloride. 3. Sodium Chloride represents two atoms that together form a molecule: NaCl. Na: Sodium and Cl: Chloride 4. An ionic bond occurs when two or more ions (an atom whose number of elections differs from its number of protons) bond
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Write up for Qualitative Analysis 1. Introduction- This experiment is for qualitative analysis so we are trying to find out what is in a substance. In this case we are using the flame test to try and discover what is in 4 unknown sample solutions that we have been given this is done by cross referencing the colour of the flame with 6 known solutions we test beforehand. Aim- In this experiment we are attempting to distinguish what substances are in the 4 unknown solutions by cross referencing
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