to what volume should you dilute 0.100 L of a 15M NaOH solution to obtain a 1.0 M NaOH solution?

MiVi = MfVf

See dilution example:
http://chemistry.about.com/od/lecturenotesl3/a/concentration.htm

1.5 L

To dilute a 15M NaOH solution to a 1.0 M NaOH solution, you can use the dilution formula, which is as follows:

C1V1 = C2V2

where:
C1 = initial concentration of the solution (in moles per liter)
V1 = initial volume of the solution (in liters)
C2 = final concentration of the solution (in moles per liter)
V2 = final volume of the solution (in liters)

In this case, we have:
C1 = 15M
V1 = 0.100 L
C2 = 1.0 M
V2 = ?

Plugging in these values into the dilution formula, we get:

15M × 0.100 L = 1.0 M × V2

Solving for V2, we have:

V2 = (15M × 0.100 L) / 1.0 M
V2 = 1.5 L

Therefore, you need to dilute the 0.100 L of 15M NaOH solution to a final volume of 1.5 L in order to obtain a 1.0 M NaOH solution.

To calculate the volume you should dilute, you can use the equation for dilution:

C1V1 = C2V2

where C1 and C2 are the initial and final concentrations respectively, and V1 and V2 are the initial and final volumes respectively.

Given:
C1 = 15 M (initial concentration)
V1 = 0.100 L (initial volume)
C2 = 1.0 M (final concentration)

Let's solve for V2:

C1V1 = C2V2
15 M * 0.100 L = 1.0 M * V2

Now, rearrange the equation to solve for V2:

V2 = (C1V1) / C2

Substituting the given values:

V2 = (15 M * 0.100 L) / 1.0 M
V2 = 1.5 L

Therefore, you should dilute the 0.100 L of a 15M NaOH solution to a final volume of 1.5 L to obtain a 1.0 M NaOH solution.