SHOW work on how you got the answers:

1.How many milliliters each of purified water and an isotonic sodium chloride solution should be used to prepare 30 ml of 1% w/v isotonic solution of fentanyl citrate (E= 0.1

Ans: 3.67 ml purified water; 26.33 ml sodium chloride solution

3.33 ml water and 26.67 ml sodium chloride solution (or rounded numbers also acceptable)

2. Rx Zinc Sulfate 0.06

Boric acid qs

Purified Water ad 30 ml

Make isotonic solution

How any grams of boric acid should be used in compounding the prescription?

Ans: 0.5 g boric acid

3. Tetracaine Hydrochloride 0.5%

Sol. Epinephrine Bitartarate 1:1000 10 ml

Boric Acid q.s

Purified Water ad 30 ml

Make isotonic solution

Sig. Eye drops

The solution of epinephrine bitartarate (1:1000) is already isotonic. How many grams of boric acid should be used in compounding the prescription?

Hint: To calculate the NaCl equivalent amount of Tetracaine HCl, you need to account for the total volume of the solution. However, to determine how much NaCl is needed to make the entire solution isotonic, you need to remember that 10 ml epinephrine bitartarate solution is already isotonic.

Ans: 0.294 g boric acid

4. A person is to receive 36 mg of ammonium chloride per kilogram of body weight. If the person weighs 154 lb (2.2 lb = 1kg), how many milliliters of a sterile solution of ammonium chloride (MW 53.5) containing 0.4 mEq/ml should be administered?

Ans:117.76 ml