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15 Nov 2019
Can someone please help me complete this worksheet
B. 0.036
C. 0.36
I need help answering d and e
Date: Preparation of the vitamin pill solution Obtain a vitamin pill and record its brand and the iron content listed on the label. Put it in a clean 125-mL Erlenmeyer flask. In the hood, measure 25 ml of 6 M HCI in a graduated cylinder and add it to the flask and boil it gently on a hot plate for about 10 minutes to dissolve all of the soluble matter in the pill. Remove the flask from the hot plate. a. b. In the hood, add 25 ml of distilled water measured with a graduated cylinder to the solution. Prepare a funnel with filter paper. Filter the sotution into a cteam +00-mt votumetric flask. Rinse the Erlenmeyer flask three times with a few ml of distilled water and add the rinsings to the funnel ever the volumetric flask. Then wash the residue on the filter paper with a few mL of distilled water, letting the washings filter into the volumetric flask. Be sure that the volume of the solution does not go over the mark on the neck of the flask. When the flask has cooled to room temperature, fill it to the mark with distilled water and mix thoroughly. This is solution A. Using the markings on the side, pour some (about 20 mL) of solution A into a clean, dry beaker. Pipet 5.00 mL of solution A into a clean 50-mL volumetric flask. Fill to the mark with distilled water and mix well. This is solution B. c. Using the markings on the side pour some (about 20 mL) of solution B into a clean, dry beaker. Pipet 5.00 mL of Solution B into a clean 50-mL volumetric flask. Add the following solutions to the flask: 50 drops of citrate, 1.00 mL of hydroquinone, and 1.50 mL of phenanthroline. Fill the flask to the mark with distilled water and mix well. Let the solution stand for about 10 minutes. This is solution C. Pour some solution C into a cuvette. d. Calibrate a spectrophotometer at 508 nm with the blank solution. Read and record the absorbances of the solutions for the standard curve and solution C. e. WASTE DISPOSAL Pour all waste materials in the waste bottle in the hood.
Can someone please help me complete this worksheet
B. 0.036
C. 0.36
I need help answering d and e
Date: Preparation of the vitamin pill solution Obtain a vitamin pill and record its brand and the iron content listed on the label. Put it in a clean 125-mL Erlenmeyer flask. In the hood, measure 25 ml of 6 M HCI in a graduated cylinder and add it to the flask and boil it gently on a hot plate for about 10 minutes to dissolve all of the soluble matter in the pill. Remove the flask from the hot plate. a. b. In the hood, add 25 ml of distilled water measured with a graduated cylinder to the solution. Prepare a funnel with filter paper. Filter the sotution into a cteam +00-mt votumetric flask. Rinse the Erlenmeyer flask three times with a few ml of distilled water and add the rinsings to the funnel ever the volumetric flask. Then wash the residue on the filter paper with a few mL of distilled water, letting the washings filter into the volumetric flask. Be sure that the volume of the solution does not go over the mark on the neck of the flask. When the flask has cooled to room temperature, fill it to the mark with distilled water and mix thoroughly. This is solution A. Using the markings on the side, pour some (about 20 mL) of solution A into a clean, dry beaker. Pipet 5.00 mL of solution A into a clean 50-mL volumetric flask. Fill to the mark with distilled water and mix well. This is solution B. c. Using the markings on the side pour some (about 20 mL) of solution B into a clean, dry beaker. Pipet 5.00 mL of Solution B into a clean 50-mL volumetric flask. Add the following solutions to the flask: 50 drops of citrate, 1.00 mL of hydroquinone, and 1.50 mL of phenanthroline. Fill the flask to the mark with distilled water and mix well. Let the solution stand for about 10 minutes. This is solution C. Pour some solution C into a cuvette. d. Calibrate a spectrophotometer at 508 nm with the blank solution. Read and record the absorbances of the solutions for the standard curve and solution C. e. WASTE DISPOSAL Pour all waste materials in the waste bottle in the hood.
Patrina SchowalterLv2
25 Sep 2019