HOMEWORK #6NAME ______

1) A patient needs 0.75 mL of Penicillin which has a concentration of 300,000 U/mL. How many Units does she need?

2) Zoey only needs 60% of her usual 300 mg dose today. What is today’s dose?

3) 4 ounces = ______tbsp

4) sig: 0.75 mL PO qid x 5 d. How many mL are dispensed?

5) Pepper needs to receive 720 mL in 4 hours. She has a 15 gtt/mL drip set. She will receive ______gtt every ______sec.

6) Ike is 6% dehydrated and weighs 2.5 lb. How many milliliters will correct his dehydration?

7) A stock solution of 20% is used to produce 500 mL of a 2.5% solution. How many milliliters of the stock solution are needed?

8) If 200mL of a 45 mg/mL solution are combined with 800 mL of diluent, what is the concentration of the final, diluted solution?

9) If your coworker is unsure of how much stock he used, but knows that it was a 300 mg/mL solution and that he added 5 L of diluent to make a 50 mg/mL solution, please figure out how much stock he actually used.

10) For a 1:20 solution, how many parts make up 1) the solute, 2) the diluent, 3) the solution?

11) For a 5:40 solution, how many parts make up 1) the solute, 2) the diluent, 3) the solution?

12) How many milliliters of a stock solution are needed to prepare 120 mL of a 1:6 dilution?

13) Convert 1:200 to a percent solution, g/100 mL, and mg/mL

14) Solution has a concentration of 1:1,000. How many milligrams are in 8 mL?

15) Solution has a concentration of 1:50. How many milliliters will need to be administered if the patient’s dose is 150 mg?

16) If you make a 1:10 dilution of a 25 mg/mL solution, what is the concentration of the final solution?

17) If you make a 4:10 dilution of a 30 % solution, what is the concentration of the final solution?

18) A solution that was diluted 1/20 has a concentration of 5%. What was the original concentration?

19) A solution that was diluted 2/5 has a concentration of 20%. What was the original concentration?

20) A stock solution with a concentration of 800 mg/mL is diluted to a concentration of 200 mg/mL. What dilution ratio was used?