Answer: Molarity (M) = 6.897 x 10-4 (exponent)
Explanation: Atomic weight of KI is 166.028
12.6 mg = 0.126g/ 166.028 = 7.58 x 10-5 mol
Molarity (M) = concentration
M = moles(n)/Volume (in liters)
M= 7.58 x 10-5 mol/0.1099L = .0006897 M = 6.897 x 10-4 (exponent)