What volume of a 2.5 m stock solution of acetic acid (hc2h3o2) is required to prepare 100.0 milliliters of a 0.50 m acetic acid solution? . use the equation. mconcentrated*vconcentrated = mdilute*vdilute.

We are given with a 2.5 M stock solution of acetic acid and we are required to calculate the volume of the solution needed to prepare 100 milliliters of 0.5 M acetic acid solution. To solve this, we acquire the formula Mconcentrated*Vconcentrated = Mdilute*Vdilute. That is 2.5 M*x=0.5M*100 ml where x is the volume of 2.5 M needed. x is equal to 20 ml. So we need 20 ml of 2.5 M solution and dilute to 100 ml using water as diluent.

The answer is c) pyrite