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- 2 what is the purpose of BSC Level 1 & 2, proper layout, performance, and its application in biosafety assessmentFor the standard equation, shouldn't it be (0.97-1.09) and so on... because (x-mean)Derive a general expression that shows pH dependence of the distributioncoefficient defined in (2-20) for a weak acid between a fermentation broth and an organic solvent.
- How is the operation of an ion selective probe used to measure pH. How does it specifically relate to the probe interface?In the laboratory, a student was tasked to prepare a stock solution of HCl for titration. The available analytical grade HCl solution in the stock room was labelled 35% w/v HCl. The student proceeded to prepare the stock solution by mixing 10mL of the HCl solution with 490mL of analytical grade water. Then, the solution was further diluted by adding 5mL, since the total volume of the solution did not reach the 500mL etched mark on the volumetric flask. To prepare the titrant, the student mixed 10mL of the stock solution, then added 40mL of analytical grade water. The titrant was subsequently used to determine the concentration of two titrand. *Use the table as a reference 1. What is the normality of the available HCl reagent in the stock room?* 5.08 N 10.15 N 20.3 N 11.0 N None of the choices 2. What is the normality of the stock solution of HCl?* 0.09N 0.10N 0.11N 0.12N None of the choices 3. What is the normality of the titrant?*…Which of the following statements is INCORRECT? A. greater the density, faster particle sediments in centrifugal force. B. greater the mass, faster particle sediments in centrifugal force. C. greater the frictional coefficient, faster particle sediments in centrifugal force. D. All the choices are correct
- I think I have 3a, 3b done but I would like to see what you guys say is the correct answer, I am stuck on 3c and if you could do 4 as well so I can check my answers with yours that would be greatly appreciatedA volumetric calcium analysis on triplicate samples of the blood serum of a patient believed to be suffering from a hyperparathyroid condition produced the following data: mmol Ca/L = 3.15, 3.25, 3.26. What is the 95% confidence interval for the mean of the data, assuming no prior information about the precision of the analysis?pneumonia is characterized by fever (a body temperature) does the patient have a body temperturr that indicates that he has pneumonia? justify your answer with suitable caculations.
- The molar conductivity of 0.010 M CH3COOH(aq) is 1.65 mS m2 mol-1. What is the acidity constant, Ka, of the acid?Consider the titration illustrated in Figure 8.] Anhydrous sodium carbonate (Na₂CO₃) is a primary standard. When 0.364 grams of the substance is placed in a conical flask, then 20.00 cm³ of sulphuric acid (H₂SO₄) solution is required to reach the end point of the titration. What is the concentration in mol·dm⁻³ of the sulphuric acid solution? [Give the answer to 3 decimal places. Do not type in the unit. Use a decimal point.] *KMnO4 and Na2C2O4 solutions were used in the reactions that took place in a back titration to determine the amount of H2O2 in a sample. Calculate the concentration of H2O2 in the sample (w / v) as% by making appropriate assumptions for the volumes and normality of all these solutions.