decomposition of hydrogen peroxide with two different sizes of potato cubes and one pureed. The same volume of potato will be used‚ only the geometry of the potato will be modified. Materials: 450 ml Hydrogen Peroxide Water 2 Erlenmeyer flasks 1 Stopper w/hole Surgical tube (18 inches) 150mL measuring beaker Potato (Have each potato skinned and cut into 4’x4’ cubes) Stop watch Student Instructions for experimental setup: Organize into groups of 4 or 5 students Obtain
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Worked example from Tutorial 8 8.3 Three laboratories‚ A‚ B‚ and C‚ are used by food manufacturing companies for making nutrition analyses of their products. The following data are the fat contents (in grams) of the same weight of three similar types of peanut butter. | |Laboratory | |Peanut Butter |A |B |C |D | |Brand 1 |16
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This case study describes what happens when a health district merges four laboratories into one unit due to external driving forces for change‚ primarily the government funding cuts. Although the intention was to develop one centralized‚ efficient‚ and high volume centre‚ the inattention to the ‘people issues’ and the cultural differences of the work units results in chaos. The recently hired laboratory manager‚ Claude‚ has implemented several stopgap measures intended to address the work load issues
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What is a Medical laboratory technician? A laboratory technician process specimens and perform laboratory tests ordered by physicians and medical technologists. Many specialize in cytotechnology‚ hematology or microbiology. As a medical technician‚ you may perform tests on saliva‚ blood‚ and tissue samples and then be responsible for recording and sharing the results with the physician. Performing these tests often requires the ability to operating various medical machines and equipment. You may
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68.04g * Mass of Na2CO3 = 10.6g 1. 10.6g of Na2CO3 was weighed in a dry beaker. Small amount of distilled water was added and the salt was dissolved. 2. The contents of the beaker were transferred to clean volumetric flask of 100ml. 3. Collection of washings was done 3-4 times. 4. The solution was made 100ml. Shook well to ensure the uniformity of the solution. 5. The contents were transferred to the storing bottle and it was labeled 1M Na2CO3 solution.
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apparatus for the reaction was set up. 3.861-grams of isoborneol‚ 2.21-mL of glacial acetic acid‚ and 4.39-mL of 6% NaOCl solution were mixed in a 125-mL Erlenmeyer flask. Another 35-mL of 6% NaOCl solution was added to a separatory funnel and supported over the flask. The NaOCl in the sep funnel was slowly added into the Erlenmeyer flask with vigorous swirling‚ approximately 2-mL every 30 seconds until all the NaOCl from the sep funnel had been added. The temperature of the reaction mixture was closely
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percentage actually obtained by chromatography. Procedure: A massed sample of 1.012g of tomato paste was placed in a 125mL Erlenmeyer flask. To the flask‚ 5mL of 50:50 hexane-acetone was added into the flask. After the 50:50 addition the flask was capped and shaken. After the settling of the sediments‚ the liquid portion was pipetted in a 50mL Erlenmeyer flask. The process of separating the liquid from the solid was repeated for a total of four times. To the extracted liquid‚ 5mL of NaCl was
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preventive healthcare‚ rapid growth of laboratory automation and expansion in test menus across labs in India are some of the factors for the growth of the India in-vitro diagnostics market. The rising number and complication of tests‚ together with a scarcity in laboratory staff‚ has resulted in a greater level of automation in laboratories. Since labor accounts for approximately 65% of operating expenses in a typical laboratory‚ automating laboratories has enabled the expansion of their capabilities
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Jolyne Piet CHM-221L-02 Lab #2: Experimental Design Isolation of Sucrose: 3.01 g Panacetin were weighed in a 125-mL Erlenmeyer flask‚ and 51mL dichloromethane were added to partially dissolve the Panacetin. The insoluble portion was gravity filtered and air dried to yield 0.45 g of sucrose (15.0 % of original Panacetin). Isolation of Aspirin: The organic filtrate was extracted through a separatory funnel with 32 mL 5% sodium bicarbonate to produce an aqueous layer and a dichloromethane layer
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Laboratory Safety Standards Jill Olson A school science laboratory is an excellent setting for students to explore and investigate the world around them. Almost every part of students’ lives is affected by science. Allowing them to see‚ touch‚ and manipulate objects in a laboratory situation gives students the real world experience to get them excited about science and to prepare them for college and beyond. However‚ James A. Kaufman‚ director of the Laboratory Safety Institute‚ proposes that
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