The molar mass of KI, or potassium iodide, is calculated by adding the atomic masses of its constituent elements: potassium (K) and iodine (I).
The atomic mass of potassium (K) is approximately 39.10 grams per mole, and the atomic mass of iodine (I) is approximately 126.90 grams per mole.
To find the molar mass of KI, you simply add these two values together:
Molar mass of KI = Atomic mass of K + Atomic mass of I
Molar mass of KI = 39.10 g/mol + 126.90 g/mol
Molar mass of KI = 166.00 g/mol
Therefore, the molar mass of potassium iodide (KI) is 166.00 grams per mole.