Answer : The volume of the resulting solution will be 0.4999 L.
Explanation : As the two molar concentration of the 

 solution are given and one of the volume concentration needs to be found.
So, according to the formula :- 

And here if we consider 

 as 0.1718 L moles and 

 as 0.3556 moles then we need to find 

 as 

 is given as 0.1222 moles.
Hence on solving the formula we get,  

 = (0.1718 X 0.3556) / 0.1222 = 0.4999 L