Five identical biood samples were analyzed to deterttmine cholesterol level in a patient The feilwing values were ohtained 157, 154, 155, 152, 155. Calculate the standand enor of the mean (SEM) fo thee data
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- 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 equationA mixture containing only KCl and NaBr is analyzed by the Mohr Method. A 0.3172-g sample is dissolved in 50 mL water and titrated to the Ag2CrO4 endpoint, requiring 36.85 mL of 0.1120 M AgNO3. A blank titration requires 0.71 mL of titrant to reach the same endpoint. Report the % (w/w) KCl and NaBr in the sample. [Ans . 84.41 % (w /w); 17.59 % (w /w)]The concentration of alcohol 1CH3CH2OH2 in blood, calledthe “blood alcohol concentration” or BAC, is given in unitsof grams of alcohol per 100 mL of blood. The legal definitionof intoxication, in many states of the United States, is that theBAC is 0.08 or higher. What is the concentration of alcohol,in terms of molarity, in blood if the BAC is 0.08?
- For the TylenolTM dose, calculate how much (in mg) did Erthy consume for all six doses. To do that, you will need the following information: Mrs. AB used a 100 mL bottle of TyelnolTM (concentration is 160 mg per 5 mL) and followed the package instructions (1.5 tsp per dose for a child weighing 16 – 21.9 kg).1.2461 g of a wheat sample were analyzed to find out the protein content, by the method Kjeldahl, with an excess of H3BO3 in the distillate receiving vessel. Calculate the% nitrogen if 13.19 mL of 0.0962 M HCl were needed to reach the bromocresol green end point. (Pat N, 14.0)Using the Friedewald equation, compute for the LDL-chol. of the patient.Use the mmol/L, so, if you have results in mg/dL like HDL, convert it first to mmol/L. Triglyceride concentration : 0.679mmol/L Cholesterol concentration: 4.843 mmol/L HDL: 49.3 mg/dL
- i) Write down the equation derived from your Excel generated standard curve , figure legend and describe its components; ii) provide the values of the absorbance data of the unknown sample (do NOT show the absorbance data of the glycine standards). Show all details of the working out of your calculation. Indicate all units! Provide the answer with two decimals precisionAn aqueous solution is 3.50 % by mass hydrochloric acid, HCl, and has a density of 1.02 g/mL. The mole fraction of hydrochloric acid in the solution is ____.A nurse administered 4.80 mLmL of a radioisotope solution that has an activity of 195 μCi/mLμCi/mL . What total dose of the radioisotope did the patient receive? Express your answer to three significant figures and include the appropriate units.
- A sample of steel weighing 2.00 g is analyzed for Cr (AW 52.0). The Cr is oxidized into chromate with alkaline permanganate and the excess permanganate is destroyed. A certain volume of 0.120 M FeSO4 is added to the acid solution and the excess is titrated with 0.0220 M KMnO4, requiring 31.0 mL. If the sample contained 0.50 % Cr, what volume (in mL) of FeSO4 was added?A 99Mo/99mTc generator is elute Monday at 7 am, producing 1.8Ci of 99mTc inthe eluate vial, in 20ml saline. What volume of eluate should be withdrawn fromthe eluate vial into a syringe to inject a patient with 20mCi of Tc-99m at3pm?You are given as following : 20 µl pure LDH on ice, 2.0ml of 6mM NAD+, 2.0ml of 150mM lactate, and 0.14M CAPS buffer. LDH reaction cocktail has final concentration of 1mM NAD+ and 25mM lactate in 0.14M CAPS buffer. LDH activityis measured by mixing 10 µl of LDH sample and 990 µl LDH reaction cocktail before getting ∆A340/min reading on spectrometer. (a). Describe in detail how you would prepare for your LDH reaction cocktail including how to make dilutions.
