Question 1 What is the ratio strength (w/v) of an isotonic solution for sodium nitrite FD1% 0.48? A. 1 in 161 B. 1 in 92.0 C. 1 in 108 D. 1 in 62.0 Question 2 What mass (g) of sodium chloride (SCE = 1.00) is required to make 144 mL of the following nose drop? 0.14 g Phenylephrine hydrochloride (SCE = 0.32), 0.1 g Sodium metabisulphite (SCE = 0.67), 0.5 g Chlorbutol (SCE = 0.24), 5 mL Propylene glycol (SCE = 0.45), purified water to 100 mL (2 decimal places) Question 3 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 2.44 litres with water gives an isotonic lotion containing 0.34 % w/v neomycin sulphate (SCE = 0.11)? Question 4 You have to prepare a solution containing 59% v/v of ethanol. You have some 96% v/v ethanol solution. How many mL of 96% v/v ethanol solution (to no decimal places) is required to prepare 3.4 L of 59% v/v of ethanol solution? Question 5 A pharmacist needs to make Tragacanth powder compound APF, which contains 15% w/w tragacanth and 45% w/w sucrose. How many grams (2 decimal places) of sucrose would be required to prepare Tragacanth powder compound APF from 128.6 g of tragacanth? Question 6 Flexible Collodion BP contains 2.5% w/v castor oil and has a weight/mL of 0.808 g/mL. How many kg of Flexible Collodion BP (to one decimal place) can be prepared from 250 g of castor oil? Question 8 How many mg of morphine hydrochloride (C17H19NO3, HCl, 3H2O, M.Wt 375.81) are equivalent to 4.74 g of morphine tartrate ((C17H19NO3)2, C4H6O6, 3H2O, M.Wt 774.8), with respect to morphine? Question 9 You have to make 1.5 L of 0.48 M potassium permanganate (KMnO4, M.Wt 158.0). How many kilograms do you need to weigh (2 decimal places)? Question 10 An aqueous solution containing 185 g of sodium chloride (M.Wt 58.44) has a density of 0.94 g/mL. If the solution molality is 1.366 mol/kg, what is the volume of the solution. Calculate your answer to 2 decimal places