1. Replicate determinations of the percent chloride by mass in a solid chloride sample yielded: 59.83, 60.04, 60.45, 59.88, 60.33, 60.24, 60.28, 59.77. a) Calculate the mean percent chloride by mass in the sample; its estimated standard deviation and the 90, 95 and 99% confidence limits for the mean.
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- 1. 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?Using conversion factors, solve each of the following clinicalproblems:a. A nurse practitioner prepares an injection of promethazine,an antihistamine used to treat allergic rhinitis. If thestock bottle is labeled 25 mg /mL and the order is a doseof 12.5 mg, how many milliliters will the nurse draw up inthe syringe?b. You are to give ampicillin 25 mg/kg to a child with a massof 62 lb. If stock on hand is 250 mg /capsule, how manycapsules should be given?2 if there is a stock solution of 2000 (ug/ml) , is it possible to use SERIAL DILUTION to generate the following 8 tubes with their concentrations? A 2000 (ug/ml) B 1500 (ug/ml) C 1000 (ug/ml) D 750 (ug/ml) E 500 (ug/ml) F 250 (ug/ml) G 125 (ug/ml) H 0 (ug/ml)
- For the serial dilution, your stock solution must have a concentration of 3.5 mg/mL. How much diluent must be added to the 5.3 mg/mL red cell to prepare the stock solution? Show pertinent solution/s. 7. If the red cell suspension is the stock solution, what is being quantified in this test? What diluent/reactant should be used to detect your answer in number 7?2- How much solution (in ml) of silver nitrate at a molar concentration of 0,0540 mol/l is needed as to receive 200 ml of the solution with desired titrimetric conversion factor of silver nitrate (М=169,863 g/mol) corresponding sodium chloride (М=58,443 g/mol) to be equal to 1,810 ∙10-3 g/ml? Express numerical result with an accuracy of: Х,ХYou perform a Bradford assay to determine the concentration of isolated α-lactalbumin. You use 50 μL of a two-fold diluted solution of α-lactalbumin in the assay. You generate a standard curve with the following equation for the line: y = 0.163x + 0.082. The absorbance of your sample was 0.674 AU. What is the concentration of α-lactalbumin, in mg/mL, in your sample? Give your answer to three significant figures.
- How many milliliters of 0.0050 N KOH are required to neutralize 25 mL of 0.0050 N H2SO4? To neutralize 25 mL of 0.0050 M H2SO4?The aliquot method was used to obtain 8 mg of a drug with a prescription balance having a sensitivity of 6 mg. A weighing error of 5% was accepted. If 140 mg of the drug was weighed, added to 2.1 g of lactose, and 120 mg of the mixture used to provide the required quantity of drug, were the calculations correct or incorrect?Twenty observations on etch uniformity on silicon wafers are taken during a qualification experiment for a plasma etcher. The data are as follows: Etch Uniformity 5.34 6.65 4.76 5.98 7.25 6.00 7.55 5.54 5.62 6.21 5.97 7.35 5.44 4.39 4.98 5.25 6.35 4.61 6.00 5.32 (a) Discuss the normality assumption and its role in this problem. (b) Check normality by constructing a normal probability plot. What are your conclusions?
- The Ksp values of silver chromate Ag2CrO4 and silver iodate Ag(IO3) are given below. Ag2CrO4 Ag(IO3) Ksp 1.12 x 10-12 3.17 x 10-8 Based on these Ksp values, which of the following is true? Choose one option only. Options: a. In the solution consisting of 1.00 x10-4 M Ag+ and 5.00 x10-5 M CrO42-, Ag2CrO4 precipitate will form. b. In the solution consisting of 1.0 x10-4 M Ag+ and 1.0 x10-4 M IO3-, Ag(IO3) precipitate will form. c. In pure water, the solubility of Ag2CrO4 is lower than the solubility of Ag(IO3). d. In the solution consisting of 0.200 M CrO42- and 0.200 M IO3-, Ag2(CrO4) will precipitate first if we add Ag+ ions gradually into the above mixture.1. How do you prepare 25 mL of a 0.4X solution of SDS from a 20X stock?2. How do you prepare 50 mL of a 0.25X solution of Trisethylenediaminetetraacetic acid (TE) buffer from a 100X stock?A solution contains 0.25 M Ni(NO3)2 and 0.25 M Cu(NO3)2. A. Can the metal ions be separated by slowly adding Na2CO3 aq solution? Assume that for successful separation 99% of the metal ion must be precipitated before the other metal ion begins to precipitate, and assume no volume change on addition of Na2CO3 solution. Ksp of CuCO3 = 1.4 x10-10 Ksp of NiCO3 = 1.42X 10-7 B. If you need to redissolve the salt that was first precipitated, what pH will you use and why ? Write your answers in template provided. Upload your step by step solution for A.