Final answer:
The molar mass of KI (potassium iodide) is the sum of the molar masses of potassium and iodine, which is 39.10 g/mol and 126.90 g/mol respectively, resulting in a molar mass of 166.00 g/mol for KI.
Step-by-step explanation:
The molar mass of KI (potassium iodide) is calculated by adding the molar mass of potassium (K) and iodine (I). The atomic mass of potassium is approximately 39.10 amu, giving it a molar mass of 39.10 g/mol. The atomic mass of iodine is approximately 126.90 amu, giving it a molar mass of 126.90 g/mol. To find the molar mass of KI, we simply add these two values together.
Molar mass of KI = Molar mass of K + Molar mass of I
= 39.10 g/mol + 126.90 g/mol
= 166.00 g/mol
Therefore, the molar mass of potassium iodide is 166.00 g/mol.