Question

Answer each question based on the variables provided. Where applicable, truncate all answers to two decimal places unless otherwise stated. _48 mcg_ 1. The concentration of Vitamin B complex in a certain vitamin mixture is 8 ppb. How many wg of the complex should be added when a drug company is making a 6 kg batch of vitamins? 2. Express 8 ppm in ratio strength and percentage strength. Truncate to four decimal places. 2a. Ratio strength 2b. Percentage strength 3. A prescription for an ointment has 3.5 mL of liquid menthol in a total of 220 ml. Calculate the percentage (v/v) of liquid menthol in the ointment. 4. How many liters of Drug A can be compounded if you have 90 mL of flavoring agent and the concentration of the final product is to be 0.2%? CS

Answer 1

1. Concentration of Vitamin B in vitamin mixture is 8ppb.

Amount of mcg of the complex that should be added when a drug company is making a 6 kg batch of vitamins is 8×6 = 48 mcg.

2. a)8ppm = 8 parts in 1000000 parts = 1000000/8 = 1:125000 ratio strength

b) 8/1000000 ×100 = 0.0008% is the percentage strength

3. Total volume of ointment is 220ml

Volume of liquid menthol in it is 3.5 ml

Percentage = 3.5/220×100

= 1.59%