5. A pharmacist desires to prepare 150g of 3.5% gentamicin eye ointment. How many grams each of 15% and 0.5% gentamicin eye ointment should the pharmacist combine to obtain the desired preparation? 6. How many milliliters of xylenol oil tincture having a specific gravity of 1.33 should be mixed with xylenol oil tincture having specific gravity of 1.02 to obtain 45mL of a mixture having 1.25 specific gravity