Answer:

Step-by-step explanation:
The molarity of the solution given the number of moles and volume can be found by using the formula;

where
c is the concentration in M , mol/dm³ or mol/L
v is the volume in L or dm³
n is the number of moles
From the question
n = 3 mol
v = 5 L

We have the final answer as
0.6 M