How do I create a detailed separations flowchart of the isolation process of caffeine from soda? The experiment uses: 1. NaOH (sodium hydroxide) 2. CH2Cl2 (methylene chloride)
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How do I create a detailed separations flowchart of the isolation process of caffeine from soda? The experiment uses:
1. NaOH (sodium hydroxide)
2. CH2Cl2 (methylene chloride)
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- Explain the use of plans and their importance in assessing the quality of pharmaceutical products. Provide a step-by-step design of a sampling plan based on a normal inspection for a 75,000 tablets with an AQL of 0.12% using the attached table (at the end of exam paper).Menthol is a common ingredient of nasal inhalers and has similar properties as naphthalene. What technique can be used to separate a mixture of menthol and sand?A 1 mL microbial suspension comparable to 1 mL of 1.0 McFarland standard was subjected to a series of dilutions. An aliquot of 0.2 mL was transferred into a 100-mL volumetric flask and diluted with sterile saline solution to its final volume. Then a 0.1 mL of the resulting solution was transferred into a 50-mL volumetric flask diluted to its final volume. What would be the final concentration?
- A student creates a calibration plot for serial dilutions of Cu(NO3)2. A graph of concentration in M (x-axis) versus absorbance (y-axis) gives a linear trendline of y = 0.345x - 0.11. c.) How many grams of Cu(NO3)2 are present in 100 grams of solution? How many grams of water?A sample of fried potatoes weighing 200 g was extracted using a volatile organic solvent. The recovered cooking oil weighed 15 g. What methods from this experiment could be used to separate the cooking oil after the extraction? What was the percent of the oil in the potatoes? Show your calculations.A calibration curve of KCl conductivity (y-axis) vs concentration (mass percent, x-axis) is made. The equation of line of best fit is y = 578.3x + 0.380 and the R 2 is 0.9998. Based on this data what is the mass percent of an unknown KCl solution with a conductivity of 2,788 uS/cm? 6.55 % 6.12 % 4.14 % 3.98 % 4.82 %
- 2. Soap can be made using a variety of different fats, oils and bases. Suppose a student wanted to make a soft, liquid soap that lathers easily. What type(s) of fat/oil and base would you recommend? How would this differ from making a solid bar of soap? 3. Vegetable oils are typically liquid at room temperature, yet Crisco (which is made of vegetable oil) is solid at room temperature. Explain why/how this is the case. 4. Explain, with the use of a diagram how soap molecules work to clean “dirt” particles. 5. Amylase is a natural enzyme found in saliva. Describe this enzyme’s function. 6. Lactose is a sugar found in milk and other dairy products. Explain how it is broken down in most individuals. Explain lactose “intolerance”.What is a chemical reason that a sample could have more than 100% purity? A) Impurity was an acid B) Impurity were not acids C) Sample was wetConcentration of AR Stock Solution (ppmppm) 21.22 Unrounded Rounded Concentration of AR Stock Solution (μMμM) 42.7461 42.7
- What type of chemical analysis would you use for the following? 1. 500 milligrams of ascorbic acid in vit. C 2. determination of sodium, glucose, alkaline phosphate, and others in a blood analysis 3. four percent calcium and two percent iron is found in an analysis of pineapple juice [Spectroscopy, gravimetric analysis, volumetric analysis, electroanalytical methods, OR chromatography]During a laboratory experiment, a student mixed two homogeneous aqueous solutions. After mixing a solid precipitate was formed. What is the best way for the solid to be separated from the solution? Put it in a beaker and heat it. Filter it using a Buchner funnel, filter flask and vacuum pump. Use a pipette to remove the solid from the liquid. Scoop it out with a spatula. The solid cannot be isolated.A clinical lab technician determines that a minimum of 60 mL of working reagent is needed for a procedure. To prepare a 1/10 dilution of the reagent from a stock solution, one should measure 60 mL of the reagent and ______ mL of the diluent.