ing 0.03% w/w_of the same drug, who would be the percentage strength (wh) a of of the mixture? 23. A physician prescribes an suspension to contain 100 mg of corti- at n ophthalmic st sone acetate in 8 mL of normal saline solution. The pharmacist has on hand a (2.5% suspension of cortisone acetate in normal saline solution. How many milliliters of this and how many milli- le S liters of normal saline solution should b be used in preparing the prescribed sus- pension?gorq ww.Ps-3/9rie 24. R Benzalkonium Chlorda

1) How many grams of each an 8% ointment and 2% ointment must be mixed to prepare 30g of 4% ointment?

What is the concentration in w/v% for 7.50 g Na2SO4 (s) dissolved in 179 mL of solution. (2 SF)

What volume (whole number mL) of glycerol (SCE = 0.35, density = 1.25 g cm-3) are required to prepare 75 mL of a concentrated solution, which on dilution to 1.21 litres with water gives an isotonic lotion containing 0.26% w/v neomycin sulphate (SCE = 0.11)?

Jamel is to receive Cleocin 275 mg IV for 6 hr. The concentration of the solution is 5.0 mg/mL. How many milliliters of solution will you need to deliver?

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You have a 20% stock of NaCl, a 30% stock of K2HPO4, 2.5 M NH4Cl and 10 mg/ml stock of ampicillin. a. How many grams of NaCl would you need to weigh out to make up 150 ml of a solution?b. You will be preparing 300 ml of media. You need to dilute this 20% stock of NaCl, the 30% stock of K2HPO4, the 2.5 M NH4 how much stocks you need to add. Fill in the table below. Stock                 Calculate Final Concentration needed      ml added20% NaCl                            1.5%                                            ? 30% K2HPO4                         2%                                            ? 2.5 M NH4 Cl                        0.1M                                          ? 10 mg/ml ampicillin water    0.05 mg/ml                               ?        water                                      To 300 ml                                 ?

Chlorhexidine gluconate is available in different products in concentrations of 4% w/vand 0.12% w/v. H ow many milliliters of the more dilute product may be prepared fromeach fluidounce of the more concentrated product?