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- Thimerosal Tincture USP contains 0.1% w/v thimerosal and 50% v/v ethyl alcohol. If the cap is left off of a 15-mL bottle of the tincture, and the ethyl alcohol evaporates leaving a final volume of 9.5 mL, what is the concentration of thimerosal in the evaporated solution expressed as a ratio strength?29. A topical solution contains 3% w/v hydro- quinone. How many liters of the solution can be prepared from 30 g of hydroqui- none? 29. 1 literWhat mass of sodium glycolate (NaC2H3O3) should be added to 400.0 mL of 1.00 M glycolic acid to produce a buffer solution with a pH of 4.00? Ka = 1.47 x 10-4. Please indicate the full solutions.
- 13. An ear drop formula contains 54 mg of antipyrine and 14 mg of benzocaine in each milliliter of solution. Calculate the percentage strength (w/v) of each ingredi- ent in the formula. 13. (a) 5.4% w/v antipyrine (b) 1.4% w/v benzocainePrepare 1.5L 2X Base stock in a media bottle: Fill out the last column of this table: Component MgCl.6H20 (NH4)2SO4 H3PO4 (85%) КСІ EDTA 1X concentration 0.52 g/L 12 g/L 1.6 mL/L 0.12 g/L 0.1 g/L 2X (Provide unit)2. Calculate [H*] and [OH-] for the following a. Baking soda (pH 8.4) b. Beer (pH 4.5)
- 1. The adsorbance is silica coated magnetite 2. what impact does the 7.85 point of zero charge have on my adsorbate? 3. Does it(7.85) enhance the performance of the adsorbate in any way?A polymer is made with the following fractional distribution. 0.5 20 Wi Mi (kg/mol) 0.4 40 0.1 30 a) Calculate M₁, Mw, and PI for this polymer.You are given a recipe for a reagent that contains 1.5% (w/v) CuSO4.5H20 (FW = 249.7 g/mol). You only have CuSO4 anhydrous (FW = 159.61) available. How much CuSO4 anhydrous in grams do you need to make 800 mL of the reagent? !! 9.58 g O7.67 g O 3.84 g O 1.50 g O 0.06 g
- How much 10% dextrose solution and 20% dextrose solution should be mixed to prepare 1 l 12.5% dextrose solution?Sodium Citrate 5 g Tartar Emetic 0.015 g Cherry Syrup ad 120 mLUsing a balance with a sensitivity of 4 mg, an acceptable weighing error of 5%, and cherry syrup as the solvent for tartar emetic, how could you obtain the correct quantity of tartar emetic to fill the prescription?26. If 100 mL of a solution for patient-con- trolled anesthesia contains 200 mg of morphine sulfate and 8 mg of droperidol, calculate the percentage strength of each of these ingredients in the solution. 26. 0.2% w/v morphine sulfate and 0.008% w/v droperidol