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- 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 mL70. If a commercially available insulin prepa- ration contains 1 ppm of proinsulin, how many micrograms of proinsulin would be contained in a 10-mL vial of insulin? 70. 10 µg proinsulin47. 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 g
- 8. What mass of solute is needed to prepare each of 1.00 L of 0.125 M K2SO4 solutions? (2 Points) 21.8 g K2SO4 218.0 g K2SO4 2.816 g K2SO4 28.16 g K2SO440. A metronidazole vaginal gel contains 0.75% of drug in 70-g tubes. An applica- tor will hold 5 g of gel for each adminis- tration. How much drug will be contained in each application? (a) 0.0375 mg metronidazole (b) 3.75 mg metronidazole (c) 37.5 mg metronidazole (d) 375 mg metronidazole 40. (c) 37.5 mg metronidazole20. According to the package insert, adding 2.5 mL of sterile water to a 1 g cefazolin vial yields a final volume of 3 mL. What volume of this solution would you need to obtain 200 mg of cefazolin?
- 43. If a topical cream contains 1.8% (w/w) of hydrocortisone, which of the following strengths is equivalent? (a) 2.7 mg hydrocortisone in 15 g of cream (b) 27 mg hydrocortisone in 15 g of cream (c) 0.54 g hydrocortisone in 30 g of cream (d) 54 mg hydrocortisone in 30 g of cream 43. (c) 0.54g hydrocortisone in 30g of cream2) How many mL of hydromorphine (2mg/ml) is necessary to use in a dog weighing 15kg at a dose of 0.2mg/kg? 3) How many mL of ivermectin (6mg/ml) should be given to a cat weighing 12.7 lbs at a dose of 0.024mg/kg? 4) How many mL of Midazolam (5mg/ml) should be given to a cat weighing 3.6 kg at a dose of 0.3mg/kg? 5) What dose should we give a puppy that weighs 4.5kg of Clavamox if we want to give it a dose of 6.25mg/lb? a) 125mg b) 62mg c) 350mg d) 165mg5. We have 100 mL of 5X TBE (Tris/Borate/EDTA) solution and need to make 1 L of 2X solution. Solid compounds also exist for each of these materials. The molecular weight of Tris is 157.60; Borate has molecular weight of 58.80 and EDTA has a molecular weight of 292.44. a) What is the stock concentration? b) What is the final concentration? c) What is the starting volume? d) What is the final volume? e) Write out the equation used to solve this. Show all your work. Are we able to make a solution using this dilution method using are starting materials? If not, propose another way to make the desired concentration and volume of the solution. Show your work.
- You have just used up the last of a 1.2 % m/m solution of agarose in water. You require another 100mls. How many grams of Agarose do you require? Note 1ml of water=1g What is the % w/v of a 100ml solution containing 5g of NaCl?16. How many milliliters of a 0.9% (w/v) solution of sodium chloride can be pre- pared from 50 tablets, each containing 2.25 g of sodium chloride? 16. 12,500 mL16.B. The formula for "Lubow's Solution" is as follows3: 1 g 500 mg Progesterone Hydrocortisone 2 g Propylene glycol Ethanol (95%) ad 100 mL (a) Calculate the quantities of each ingredient required to prepare 2.5 mL of solution. (b) How many milliliters of propylene glycol (sp. gr. 1.04) are needed to prepare a liter of the formula?