What volume of a 6.0 M NaOH solution would you need to prepare 250.0 milliliters of a 3.0 M NaOH solution?

1 answer

How many moles do you need? That is M x L = 3.0M x 0.250 L= ??
Now M NaOH = moles NaOH/L NaOH and solve for L NaOH, then convert to mL.

An easier way is to use the dilution formula
c1v1 = c2v2
6*x = 3.0*250
solve for x