During fracturing‚ these two ores can be dissolved‚ allowing for the ions to flow downstream into the rivers and lakes‚ resulting in exceedingly high barium levels in the water. This can cause high amounts of contamination in not only the lakes but drinking water reservoirs. Three separate trials were conducted using the colorimeter and a BariVer Barium Reagent Powder Pillow mixed with the water sample. The tests produced results of 2 mg/L‚ 1 mg/L‚ and 1 mg/L. It was decided that another test must be
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the concentration of reactants increases which causes the equilibrium system to move to the right (products) side. Therefore‚ the solution turns purple. 6) Cr2O72- + 2OH- ↔ 2CrO42- + H2O 9) In step 7‚ there was HCL added prior to the addition of barium nitrate and this caused the reaction to shift right causing the production of additional dichromate. This meant there was a
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Survey of the Sciences Unit 4: The Science of Fireworks 7-7-14/7-14-14 What is a firework? An explosive or combustible used for display. In the 19th century the introduction of new ingredients such as magnesium and aluminum greatly heightened the brilliance of such displays. There are two main classes of fireworks‚ force-and-spark and flame. In force and spark compositions‚ potassium nitrate‚ sulfur‚ and finely ground charcoal are used‚ with additional ingredients that produce various types
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invasive rising number of laparoscopic cholecystectomy procedures. The report “Medical Specialty Bags Market Analysis By Product (Anesthesia‚ Sterile Packaging‚ Resuscitation Bags‚ Bile Collection‚ Intravenous‚ Blood‚ Enteral Feeding‚ Cadaver‚ Enema‚ Ostomy Collection‚ CAPD) And Segment Forecasts To 2020‚” is available now to Grand View Research customers and can also be purchased directly at http://www.grandviewresearch.com/industry-analysis/medical-specialty-bags-market Further key findings
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Chlorine Zachary Grindle Chemistry 1301 Professor Bott June 24‚ 2010 Chlorine has an atomic mass of 35.453‚ atomic number 17‚ is a member of the halogen family (VIIA)‚ and its symbol is “Cl”. Chlorine contains 17 protons and 18 neutrons in is nucleus. There are two isotopes for chlorine as well; Cl-35 and Cl-37. Chlorine was discovered in 1774 by Swedish chemist Carl Wilhelm Sheele. Sheele came upon chlorine when he put a few drops of hydrochloric acid (HCl)‚ then known as muriatic acid
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Chloride |Slightly toxic by ingestion | |Calcium Chloride |Slightly toxic | |Barium Chloride |HIGHLY toxic by ingestion. Use extreme caution | |Cupric Chloride |HIGHLY toxic by ingestion. Use extreme caution
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Nitrate Barium Chloride Potassium Thiocyanate Sodium Sulfate - Stayed white in color - Turned cloudy in color - Precipitation formed in solution - Stayed white in color Potassium Chloride - Turned cloudy in color - Precipitation formed in solution - Stayed white in color - Stayed white in color Iron (III) Nitrate - Stayed orange in color - Stayed orange in color - Changed color from orange to black Chemical Changes of Test Solutions Test Solution Silver Nitrate Barium Chloride
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heating‚sterilization and combustion. Our instructor‚ Dr. Immel‚ provided us with six heavy metals those metals were: Barium‚ Calcium‚ Lithium‚ Potassium‚ Sodium‚ Strontium. My group got a platinum flame loop‚ and decontaminated it with the water beaker filled half way with water. To light the Bunsen burner my group used a striker‚ which Dr. Immel provided. We started off with Barium‚ when Charlotte put it into the flame it gave the flame a yellow kind of color and a sprinkle of green. After we decontaminated
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MOLE RELATIONSHIPS IN A CHEMICAL REACTION PRE-LAB QUESTIONS 1. Balance the equation for the reaction of barium chloride with silver nitrate. 2. Predict the mole ratio of BaCl2 to AgCl for the equation. 3. If an experiment with 10.2 g barium chloride produced 14.5 g silver chloride‚ calculate the experimental mole ratio of silver chloride to barium chloride. Name:_______________________ MASS AND MOLE RELATIONSHIPS
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Winstons job What happened in the unseen labyrinth to which the pneumatic tubes led‚ he did not know in detail‚ but he did know in general terms. As soon as all the corrections which happened to be necessary in any particular number of The Times had been assembled and collated‚ that number would be reprinted‚ the original copy destroyed‚ and the corrected copy placed on the files in its stead. This process of continuous alteration was applied not only to newspapers‚ but to books‚ periodicals‚ pamphlets
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