Answer:
0.020 mol
Step-by-step explanation:
Data:
V = 100.0mL
c = 0.20 mol·L⁻¹
Calculations:
Molarity = moles/litres
c = n/V
Multiply each side by V: n = cV
(a) Convert millilitres to litres
100.0 mL × (1 L/1000 mL) = 0.1000 L
(b) Calculate the moles
n = 0.1000 L × (0.20 mol/1 L) = 0.020 mol
The solution contains 0.020 mol of KI.
