Question

What volume of a 6.0 M NaOH solution is needed to produce 3.0 L of a 0.1 M solution?

Answer 1

For answering this question you need to calculate amount of mol in final mixture.

3.0 L * 0.1 M = 0,3 mol

Now you need to calculate volume of starting solution that include amount of 0,3 mol

3.0 mol in 1 L

0.3 mol in V

V=0.1 L& or 100 ml