Practical Calculations

Question 1

Concentration of a drug

Answer 1

The amount of a drug in a given volume of blood plasma.

Question 2

Dilution

Answer 2

A process of reducing the concentration of a substance in a solution.

Question 3

Dosage

Answer 3

The amount of a drug dose and the frequency at which the medication must be administered to a patient.

Question 4

Dosage form

Answer 4

A drug’s physical appearance; the form in which they are marketed for use.

Question 5

Dosage range

Answer 5

A drug’s dosage formula expressed as a set of two numbers; a minimum and a maximum safe dose.

Question 6

Dose

Answer 6

The amount of drug to be administered to a patient (e.g.: 100 mg).

Question 7

Equivalent weight

Answer 7

One gram molecular weight divided by the total positive valence of the material.

Question 8

Milliequivalent

Answer 8

A term used to express the concentration of electrolytes in a solution; 1/1000 of an equivalent weight.

Question 9

Percent concentration

Answer 9

An expression of the strength of a substance based on the ratio of parts per hundred (e.g.: 25%).

Question 10

Quantity sufficient

Answer 10

The amount of a solution added to arrive at the desired volume.

Question 11

Regimen

Answer 11

A program for administration of a drug that includes the route, the dose, the frequency, and the duration of administration.

Question 12

Ratio concentration

Answer 12

An expression of the strength of a substance based on the ratio of its parts (e.g.: 1:32).

Question 13

Solute

Answer 13

A substance dissolved in a solvent to form a solution.

Question 14

Solution

Answer 14

A mixture of two or more substances that are combined with each other.

Question 15

Solvent

Answer 15

A solution capable of dissolving other substances.

Question 16

Stock solution

Answer 16

A concentrated solution that will be diluted to a weaker solution for use.