Answer= 2 mol/dm^3
Explanation:-
Firstly, we convert the volume, which is in cm^3 to dm^3. To do that divide number in cm^3 by 1000:
100/1000= 0.1 dm^3
Formula for concentration is:
Concentration= No. of moles/ Volume
So,
Concentration= 0.2/0.1
Answer= 2 mol/dm^3
