What volume of 0.0641 M HClO4 solution would you make 250 mL of 0.025 M solution by dilution with water.

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

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).