Question

What volume of distilled water should be added to 400cm3 of 2.0mol/dm 3 H2SO4 to obtain 0.20mol/dm3 of solution

Answer 1

cc1 x M1 = cc2 x M2
400 x 2.0 = cc2 x 0.2M

cc2 gives the TOTAL volume. Subtract 400 to find the volume that must be added.

Answer 2

the answer to the question