Chemistry Titration

Question

If you are given a 250mL volumetric flask, (+-.01mL) what volume of a 2.00M stock solution will you need to make a 250.00mL of the .15M NaOH titrant solution?

Answer 1

V1M1 = V2M2

(x ml)(2.00 M) = (250. ml)(0.15 M)

x = 18.75 mls = 19 mls (to 2 sig figs based on 2 sig figs in 0.15 M)