Answer:
10-2 moles
Explanation:
recall: volume * concentration = mass (moles in our case)
First, let's simplify our units
200 mL = 0.2 L
0.111 M = 0.111 moles/L
now use the above equation for mass:
0.2 L * (0.111 moles/L) = 0.0222 moles or 2.22 * 10-2 moles
