Answer:
5.484mol (5mol)
Explanation:
The molarity is the number of moles of a substance over a given volume in litres. Since we are given the volume, what we need is the numebr of moles of NaCl.
Given the mass of NaCl and knowing the relation M = m/n, where M is the molar mass, m is the mass and n is the number of moles, swap the units of n and M, for which you get n = m/M.
Now that we have the mass and the molar mass, we can find the number of moles by doing 192.3/58.44 = 3.2906 mols of NaCl.
Now all there is left is to divide the number of mols found by the volume.
3.2906/0.6 = 5.484 mol/L (1 s.f. from 0.6L so 5 mol/l)