use analytical separation and analyses to outline analytical separation method protocols that can be employed to recover extremely high deposit of heavy metals and particulate matter in the river making wholesome for drinking in illegal mining communities .
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use analytical separation and analyses to outline analytical separation method protocols that can be employed to recover extremely high deposit of heavy metals and particulate matter in the river making wholesome for drinking in illegal mining communities .
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- Studies have revealed extremely high deposits of heavy metals and particulate matter in rivers, making them unwholesome for drinking. With your knowledge on analytical separation and analyses, outline a suitable analytical protocol that can be employed to recover polluted river bodies and make them wholesome for drinking. Explain in details step by step analytical protocol.Why is recrystallization not applicable to samples which contain large amount of impurities?Additives that may be included in the mobile phase for SEC hexane Salts Detergents Urea
- Describe liquid-liquid extraction. Provide at least one application for liquid-liquid extraction in industryA forensic chemist is given a white powder by the investigator of a crime scene. The investigator wants to know if the powder is a pure substance or a mixture. The chemist dissolves some of the powder in deionized water making a clear solution. She finds that a precipitate forms when she adds an excess aqueous solution of sodium chloride. She filters the precipitate and washes it several times with deionized water. To this filtrate she then adds an aqueous solution of sodium carbonate. A precipitate forms. Question: Draw two pictures representing a molecular / atomic / ionic view of what occurred when a precipitate formed with the addition of sodium chloride solution. Choose the type of particle that is the most appropriate for this reaction. Place charges on any ions indicating charge values (+1, -2, etc.) when they are known. If charges are unknown indicate whether the ion is positive or negative. Clearly indicate which picture represents before the reaction occurs. Should…Ammonium sulfate is added to an unknown mixture of ions. A precipitate forms. The solution is centrifuged, and the remaining solutions is decanted. Ammonium oxalate is then added to the solution and no precipitate forms. Sodium monohydrogen phosphate and sodium hydroxide are added to the decanted solution, and no precipitate forms. Sodium hydroxide is added to a fresh sample of the unknown. A damp piece of litmus paper over the opening of the test tube remains red. Select the ions present. Question 5 options: Ba2+ Ca2+ Mg2+ NH41+
- Ammonium sulfate is added to an unknown mixture of ions. A precipitate forms. The solution is centrifuged, and the remaining solutions is decanted. Ammonium oxalate is then added to the solution and no precipitate forms. Sodium monohydrogen phosphate and sodium hydroxide are added to the decanted solution, and no precipitate forms. Sodium hydroxide is added to a fresh sample of the unknown. A damp piece of litmus paper over the opening of the test tube turns blue. Select the ions present. Question 4 options: Ba2+ Ca2+ Mg2+ NH41+4 What will be the ideal precipitating agent in gravimetric analysis? Select one: O React to all elements in Alkaline metals, Alkaline earth metals, and Halogens. O Produce a precipitate that is sparingly soluble. React only to the constituents of the atmosphere. O Produce a precipitate of unknown chemical composition after it is ignited.K2CO3 (aq)+ CaCl2 (aq)→ CaCO3 (s) + 2KCl (aq) Data Sheet Table 1: Data and Observations Material Mass CaCl2 2.0g K2CO3 2.5g Filter Paper 1.6g Watch Glass 35.8g Filter Paper + Watch Glass + Precipitate 38.9 Precipitate 1.5g Table 2: Mass of CaCl2 after 24 Hours Initial Observations 24 hour Observation Weigh Boat Mass of Weigh Boat 0.5g Mass of Weigh Boat 0.5g CaCl2 2.0g Mass of CaCl2 2.4g Mass of CaCl2 Calculate the theoretical yield of the solid precipitate. Then use that to calculate the percent yield of the solid precipitate.
- The standard addition method is used to analyze a sample of a river water for mercury. Solution A is made by pipetting 5.00 mL of undiluted sample in to a 10 mL volumetric flask and filling to the mark with DI water. Solution B is made by pipetting 5.00 mL of undiluted sample and 3.00 mL of 15.0 ppb of Hg standard into same 10.0 mL volumetric flask and filling to the mark with DI. Solution A and B are analyzed using atomic absorption spectroscopy and give a percent transmittance values of 56 % and 33 % respectively (not blank corrected). A blank has a transmittance of 96%. What is the corrected absorbance of both solution A and B? OA. Solution A: 0.123 Solution B: 0.463 O B. Solution A: 0.463 Solution B: 0.234 O C. Solution A: 0.123 Solution B: 0.234 O D. Solution A: 0.234 Solution B: 0.463The standard addition method is used to analyze a sample of a river water for mercury. Solution A is made by pipetting 5.00 mL of undiluted sample in to a 10 mL volumetric flask and filling to the mark with DI water. Solution B is made by pipetting 5.00 mL of undiluted sample and 3.00 mL of 15.0 ppb of Hg standard into same 10.0 mL volumetric flask and filling to the mark with DI. Solution A and B are analyzed using atomic absorption spectroscopy and give a percent transmittance values of 56 % and 33 % respectively (not blank corrected). A blank has a transmittance of 96%. What is the corrected absorbance of both solution A and B? A. Solution A: 0.123 Solution B: 0.463 B. Solution A: 0.463 Solution B: 0.234 C. Solution A: 0.123 Solution B: 0.234 D. Solution A: 0.234 Solution B: 0.463Does it possible to use gravimetric analysis to quantiify certain parameters as indicators of quality in squash soup? If yes, please explain the process