tudent needs 25.0 mL of 9.60x10 e No. 6 stock solution to work with, how much of the 2.00 mM solution should be added to the 25.0 mL volumetric sk? Hint, 2.00 mM is 0.00200 M. ) 8.330 mL -4 M FD&C Yellow Dye No. 6 solution. If the student has 2.00 mM FD&C Yellow 12.00 mL O 2.083 mL 0.08330 mL 10.50 mL ick Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answe
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- BSA for concentration measurements is often prepared as a 10 mg/mL stock solution. Suppose you wish to prepare a series of 10 mL solutions of BSA at 1.0, 0.8, 0.6, 0.4, and 0.2 mg/mL. Using the dilution equation C1 × V1 = C2 × V2, you plan to do this by transferring a calculated volume (V1) of the 10 mg/mL (C1) into a clean test tube, then adding water in sufficient volume to produce 10 mL (V2) at the desired concentration (C2). Complete the table below, showing the volume of stock 10 mg/mL solution you need to add to each tube, and the volume of water you need to add to each. Also, convert the desired mg/mL concentration values to their equivalent in μM (micromolar; 10-6 M).Following the directions in the laboratory manual, you create Standard 2 by transferring the following volumes of 50.1 μgmL BSA, 0.1021 M NaCl, and Bradford reagent into a small test tube. Calculate the concentration of BSA (in μgmL) in the test tube. volume BSA volume NaCl volume Bradford reagent initial pipet volume 0.85 mL 0.96 mL 4.67 mL final pipet volume 0.51 mL 0.21 mL 0.58 mLA student prepares a stock solution of BaF2 by dissolving 50.00 g of a BaF2 in 1.00 L of water. An additional 2 drops of 37% (w/v%) HCI was added to acidify the solution. How many mL of the stock solution will be transferred to prepare a 100.00 mL solution with 0.10 M BaF2 solution? a. 38.05 mL b. 35.07 mL c. 380.5 mL d. 37. 50 mL e. None of the above
- The exact concentration of a Na2S2O3 standard solution was determined by using KIO3 stock solution. 0.2189 g of KIO3 (potassium iodate Mr = 214.00 g/mol) were diluted to 200 cm3. 25 cm3 samples were titrated (after addition of acid and KI, proper amount in excess). The average of the consumption was 15.47 cm3. What is the concentration of Na2S2O3 standard solution and the KIO3 solution?1. A group of students from the instrumental analysis laboratory of the course analyzed the sodium content in a serum sample using ICP-OES. They used 5 flasks with 25 mL of sample serum in each and added different amounts of a standard 2.640MNaCl solution to a total volume of 50 mL . Calculate: a. Equation for calibration b. Serum sodium concentrationA liter of 1/3 NS is to be prepared from 0.9% concentrated sodium chloride solution and sterile water for injection. How many milliliters of each are to be used?
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- Come up with a dilution scheme for a test solution starting from 1000 μg/mL Mn stock solution so that the concentration of permanganate in the solution just prior to measurement is approx. 20 μg/mL MnO4-. Carefully read the units!Q1) (a) Analyze the effects of contaminants in the gravimetric analysis. (b) A raw sample of NaCl weighing 5.45 g was treated with excess of AgNO3 6.92 g AgCl is obtained. Determine the purity of the NaCl.(c) Discuss the factors which contribute to the formation of precipitatediluting a 0.40M CuSO4 stock solution with water, calculate the concentration of each of the solutions ( trials ). Trial Volume(mL) 0.40M CuSO4 volume(mL) Dl H20 new concentration CuSO4 1 2.0 8.0 2 4.0 6.0 3 6.0 4.0 4 8.0 2.0 5 10.0 0.0