Answer:
0.20M NaCl is the concentration of the NaCl dilution
Explanation:
A dilution consist on the addition of more solvent in a solution in order to decrease their concentration.
In this problem, the 3.0M NaCl solution is decreasing their concentration 15 times. That is:
3.0M NaCl / 15 =
0.20M NaCl is the concentration of the NaCl dilution
