(8) One formula for an O/W ointment base is as follows:
Distilled water qs.ad
How many milliliters of glycerin would be needed to prepare 500 g of the
above ointment base?
Ans: ________ ml
(9) How many grams of petrolatum would be required to make this
Ans: __________ grams
(10) What is the specific gravity of a solution having a volume of 473
milliliters and weighing 500 grams?
Ans: __________ specific gravity