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The elution order does not match the expected order for coconut oil and the peaks do not match. Explain what might cause this issue.
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- give the respective the TOTAL DILUTION FACTOR of respective serial dilutions. show complete solution.The column efficiency is constant for a column that uses a cons tant eluent composition. What does this say about the peak width of slowly eluting compounds relative to those of rapidly eluting compounds?Calculate the following concentration given this
- Given an 8 M potassium chloride stock solution, explain whether it is possible to perform a dilution resulting in an 11 M working solution.Given the following information calculate the concentration of caffeine for the blank, standards 1-7, and the sample....An analysis of city drinking water for total hardness was done by two students in the laboratory and produced the following results (in ppm CaCO3): Student A: 228.3, 226.4, 226.9, 227.1, and 228.6. Student B: 229.5, 226.1, 230.7, 223.8, and 227.5 1. Calculate the following for each data set: (proper significant figures, neglect units) a) Mean for student A b) Mean for student B c) Relative standard deviation for student A d) Relative standard deviation for student B e) Confidence Level for Student A at 95% (write as a range for example: 200-300) f) Confidence Level for Student B at 95% (write as a range for example: 200-300) g) Which of the student have a more precise result? (write STUDENT A or STUDENT B)
- Using pearson's square, how to attain 30o Brix syrup using 50oBrix and 20o Brix syrup solutions? (please indicate the solution and formula)How many mL of methadone is needed for a patient who was prescribed 0.015 g of methadone? The vial reads 6 milligrams of methadone per 1 mL of solution.439 mL of 0.270 M hydrochloric acid is exactly neutralized with 0.920 M potassium hydroxide solution. What volume of base solution is required?
- You record the absorbance of your unknown BSA sample at 0.276. What is the concentration in ug/mL of the unknown assuming you have a standard curve with the line of best fit with y=0.0001x+0.0038 as its equationIn kool aid chromatography, what factors affect the efficiency of the column? Also discuss the Van-Deemter equation.You have a 6 M solution of stock A. You do the following serial dilutions: Add 1 ml of stock A to tube B. Add 9 ml H2O. Mix.Then take 1 ml from tube B and put it into tube C. Add 19 ml H2O. Mix. Then put 5 ml from tube C into tube D. Add 5 ml H2O. A. what is the final (cumulative) dilution of stock A (dilution factor)? B. What is the final concentration (include units) after all these dilutions?