Final answer:
K-DUR 20 mEq tablet contains 20 milliequivalents (mEq) of potassium chloride.
Step-by-step explanation:
K-DUR 20 mEq tablet contains 20 milliequivalents (mEq) of potassium chloride (KCl). The amount of KCl in the tablet is measured in mEq rather than grams because mEq is a unit that reflects the chemical activity or binding capacity of a substance. In this case, each tablet contains 20 mEq of KCl, which is equivalent to a specific quantity of potassium ions (K+) and chloride ions (Cl-).