Final answer:
About 20 drops are estimated to be in 1 milliliter according to the apothecary system. There are approximately 6 teaspoons in 1 ounce and 3 teaspoons in 1 tablespoon.
Step-by-step explanation:
In the apothecary system, the conversion factor for the number of drops in a milliliter can vary, as it is not standardized. However, a common approximation is that 1 milliliter contains about 20 drops. Teaspoons are a more standardized measure, with 1 teaspoon being approximately 4.93 milliliters. Regarding your question about teaspoons in an ounce, using this relation, it can be calculated that 1 ounce, which is approximately 29.57 milliliters, contains about 6 teaspoons (29.57/4.93). For the teaspoons in a tablespoon, the standard measure is that 1 tablespoon is equal to 3 teaspoons.