Molarity is calculated using the following equation:
number of moles solute/ number of litres of solvent.
Number of moles = 0.2 moles (given)
1 litre = 1000 ml
Therefore, 200 ml = 0.2 litres
Using the previously mentioned equation, we can calculate molarity as follows:
Molarity = 0.2/0.2 = 1