31. The formula for a cosmetic cream calls for 5% of an emulsifier blend consisting of Span 60 and Tween 20. If the Required HLB of the oil phase is 14.0, how much of each of the emulsifiers, respectively, should be used in preparing 500 grams of the cream? (HLB for Span 60 = 4.7; HLB for Tween 20 = 16.7) a. 5.6 grams; 19.4 grams b. 8.4 grams; 16.6 grams c. 12.5 grams; 12.5 grams d. 15.2 grams; 9.8 grams
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31. The formula for a cosmetic cream calls for 5% of an emulsifier blend consisting of Span 60 and Tween
20. If the Required HLB of the oil phase is 14.0, how much of each of the emulsifiers, respectively, should
be used in preparing 500 grams of the cream? (HLB for Span 60 = 4.7; HLB for Tween 20 = 16.7)
a. 5.6 grams; 19.4 grams
b. 8.4 grams; 16.6 grams
c. 12.5 grams; 12.5 grams
d. 15.2 grams; 9.8 grams
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- 64. A skin test for fire ant allergy involves the intradermal skin prick of 0.05 mL of a 1:1,000,000 (w/v) dilution of fire ant ex- tract. How many micrograms of extract would be administered in this manner? 64. 0.05 µg fire ant extractRx Clindamycin phosphate 4% w/v Propylene glycol 12.9% w/v Purified water 11% w/v Isopropyl alcohol ad 244 mL (Sp.G. = 0.880) Ft. clindamycin gel Sig.: Place thin layer onto affected areas How many grams of isopropyl alcohol are present in a clindamycin gel that has 76 mL of purified water? Assume negligible volume shrinkage as result of mixing these ingredients. Answer: 415.2 (please show all work) ANSWER IS ALREADY GIVEN PLEASE SHOW WORK IN DETAIL HOW IT COMES54. A doxycycline calcium syrup is preserved with 0.08% (w/v) of methylparaben, 0.02% (w/v) of propylparaben, and 0.10% (w/v) of sodium metabisulfite. Express these concentrations as ratio strengths. 54. 1:1250 w/v methylparaben 1:5000 w/v propylparaben 1:1000 w/v sodium metabisulfite
- 17. If an intravenous injection contains 20% (w/v) of mannitol, how many milliliters of the injection should be administered to provide a patient with 100 g of mannitol? 17. 500 mLMD ordered morphine SO4 gr 2/5 and the pharmacist has a stock solution of gr 1/8 per milliliter of morphine SO4. How many milliliters of the stock solution is required to fill the Rx?As a part of a clinical study, a pharmacist is asked to prepare a modification of a standard 22 g package of a 2% mupirocin ointment by adding the needed quantity of mupirocin powder to prepare a 3% w/w mupirocin ointment. How many mil- ligrams of mupirocin powder are required?
- You own a compounding able pharmacy and are presented with a presciption for fortified gentamicin eye drops 5mg/mL. You have in stock a gentamicin injection at 40mg/ml and 5ml gentamicin eye drop labled to contain 3mg/ml. How many mililiters of the injection should be added to the 5ml of the commercial eye drop to gice it a 5mg/ml "fortifited" concentration?47. Tretinoin gel (RETIN-A MICRO) is avail- able in two strengths: 0.1% w/w and 0.04% w/w. Which of these represents equivalent concentrations of the two strengths? (a) 15 mg/15 g and 30 mg/30 g (b) 5 mg/5 g and 0.06 g/15 g (c) 15 mg/15 g and 60 mg/15 g (d) 30 mg/30 g and 6 mg/15 g 47. (d) 30 mg/30 g and 6 mg/15 g26. 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
- 59. An assay for ergocalciferol calls for the dissolution of 0.5 mg of ergocalciferol with chloroform up to 5 mL, and the ad- dition of 0.3 mL of acetic anhydride and 0.2 mL of sulfuric acid. Calculate the ratio strength of ergocalciferol in the mixture. 59. 1:11,000 w/v ergocalciferolLactic acid 4 g Salicylic acid 5 g Trichloroacetic acid 2 g Flexible collodion qs ad 100 g Sig: wart remover. Use as directed (a) Flexible collodion contains 20% w/w camphor and 30% w/w castor oil. How many grams of each would be contained in 30 g of the mixture? (b) The specific gravity of castor oil is 0.955. H ow many milliliters of the oil is contained in 30 g of the mixture? (c) If the specific gravity of the mixture is 0.781, what are the percent w/v concentrations of lactic acid, salicylic acid, and trichloroacetic acid in the mixture? Answer: (a) 5.34 g camphor and 8.01 g castor oil (b) 8.39 mL castor oil (c) 3.12% w/v lactic acid, 3.91% w/v salicylic acid, and 1.56% w/v trichloroacetic acid Solution of the given answer is needed. Thank you so much and God bless. Happy new yearCodeine 6 mg/ mL Simple syrup qs ad 2 floz (60 mL) a. Calculate the number of grams of codeine needed b. If we have codeine 30 mg tablets in stock, how many tablets are required? c. Calculate the percentage strength and ratio strength of this preparation 2. Acetazolamide Using Acetazolamide 250 mg tabs X 10 Simple syrup qs 100 mL a. Make qs 250 mL b. Find concentration