Respuesta :

Answer:

97ml of 0.0641M HClO₄

Explanation:

Using the dilution equation

(Molarity of conc.)(Volume of conc.) = (Molarity Dilu'd)(Vol Dilu'd)

=> M₁V₁ = M₂V₂ => V₁ = M₂V₂ / V₁

=> V₁ = (0.025M)(250ml)/(0.0641M) = 97ml of the 0.0641M HClO₄