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- Use the formula below for each person to determine the final cumultative error. a) pierre= 25mL±0.03mL + 5mL±0.01mL + 10mL± 0.02mL b) Raphael:(5mL±0.01mL) x8 c) Rebecca: 50mL±0.05mL d) 25mL±5% + 5mL±5%Below is a Beer's Law Plot for the concentration of a specific colored compound x. A solution of compound X is measured with the spectrophotometer to have an optical density of 0.60. a) What is the concentration of compound X in this solution. Answers must contain proper units for full credit. b) The absorbance of this compound was measured at 540 nm. Why was this absorbance chosen? 0.9 0.8 0.7 0.6 805 4 0.4 0.3 0.2 Absorbance at 540 m1) If you have 2.5g of hydrocortisone POWDER, how many grams of a 0.05% ointment can be compounded? 2) How many mL of a 0.45% saline solution can be made with 6750 mg of sodium chloride? 3) Your pharmacy receives an order to compound 120 g of a 1.25% cream. How many mg of drug are required to compound this order? 4) Is it possible to make 1200 mL of a 30% dextrose solution with only 75 g of dextrose? 5) You are asked to compound a 15% zinc oxide cream. How many grams of this cream can you make using 30,000mg of zinc oxide? 6) Using 45g of acetic acid, how many mL of a 20% acetic acid solution can be made? 7) Calculate the percent strength of a solution when 8 g of drug is dissolved in 400 mL of solution. 8) Calculate the percent strength of a solution when 2.5 g of drug is dissolved in 750 mL of solution. 9) Calculate the percent strength of a solution when 5000 mg of drug is dissolved in 500 mL of solution.
- Which of the following statements about AAS and AES is FALSE a)Sample used in AAS are usually in the form of aqueous solution b)In flame AAS, the flame is used for atomization as well as excitation purpose c)The graphite furnace is an example of non-flame atomizer d)In flame AES, no light source is required. What is the advantages of Axial torch configuration over Radial configuration in Inductive Couple Plasma-Optical Emission Spectrometer (ICP-OES) a)Increased radiation intensity – a longer path length b)Excellent tolerance to dissolve solids c)Can analyze S, P, and Halogens d)Excellent torch lifetimes1. A.) Which compound acts as dehydrating agent in Molisch's test? B.) With the correct answer above, what is its chemical function? 2. A.) Which compound is present in Fehling's A? B.) With the correct answer above, what is its chemical function? 3. A.) Which compound is present in Fehling's B? B.) With the correct answer above, what is its chemical function? 4. A.) Which compound acts as oxidizing agent in Benedict's Test? B.) With the correct answer above, what is its chemical function? 5. A.) Which compound acts as dehydrating agent in Bial's Test? B.) With the correct answer above, what is its chemical function?a) A bottle is labeled Demerol (meperidine) 50 mg/cc. How many cubic centimeters are needed to give a 125 mg dose? b) Promazine HCL comes as 500 mg/10 ml. How many milliliters are needed to give 150 mg dose? c) Hyaluronidase comes as 150 U/cc. How many cubic centimeters for a 30 U dose?
- In which type of chromatography, solvents of increasing polarity are passed through a column of silica gel?a) High performance liquid chromatographyb) Thin layer chromatographyc) Adsorption chromatographyd) Gas-liquid chromatographyTo analyze a sample by mass spectrometry, the sample must consist of gas phase ions. a) Explain why it is difficult to make gas phase ions of proteins. b) Generally explain how electrospray ionization turns proteins in solution into gas phase ions.What is the dose in mSv for 2.5 mGy of neutron exposure to the eye?
- 5) Identify the different phases illustrated here. Why are there so many that look like the one in the upper left corner? : 8 €:a) What are the methods used for cholesterol determination? Explain the basis of the method you used in your experiment by writing.b) In the experiment conducted for the determination of cholesterol, the function of the calibration curve obtained using standard cholesterol solutions of 25-400mg/dl was determined as y= 0.0009x.Since the absorbance of the serum sample was determined as 0.28, how many mg/L is the amount of cholesterol in the sampleMobile phase can be : A) Solid or liquid B) Only solid C) Only gas D) Liquid or gas