How much codeine is needed to prepare 120 ml of a cough syrup with a codeine concentration of 15 mg/ml?
15 mg/ml * 120ml = 1800 mg
To determine how much codeine is needed to prepare a 120 ml cough syrup with a codeine concentration of 15 mg/ml, you can use the formula:
Amount of codeine = Volume of syrup × Concentration of codeine
In this case, the volume of syrup is given as 120 ml, and the concentration of codeine is 15 mg/ml. Plugging these values into the formula, we get:
Amount of codeine = 120 ml × 15 mg/ml
Simplifying this equation, we find:
Amount of codeine = 1800 mg
Therefore, to prepare a 120 ml cough syrup with a codeine concentration of 15 mg/ml, you would need 1800 mg of codeine.