EXERCISES, LESSON 2
INSTRUCTIONS: Answer the following exercises by marking the lettered response
that best answers the exercise, by completing the incomplete statement, or by writing
the answer in the space provided at the end of the exercise.
After you have completed all of these exercises, turn to "Solutions to Exercises"
at the end of the lesson and check your answers. For each exercise answered
incorrectly, reread the material referenced with the solution.
1. How many grams of coal tar must be added to 500 grams of a 1% coal tar
ointment to make a 4% coal tar ointment?
ANS: ___________ grams of coal tar
2. How many milliliters of water must be added to one quart of Zephiran
solution (17%) to make a 1:1000 solution?
ANS: ___________ milliliters of water
3. How many grams of each ingredient are needed to compound the following
prescription? The specific gravity of mineral oil is 0.85.
ANS: ___________ g zinc oxide
___________ g sulfur, ppt
___________ g mineral oil
___________ g petrolatum