if you start with a sample of solid potassium KOH, weighing 12.5 grams, what volume in mL of a 0.500 M HCl solution will neutralize this solution?

Ineed to find the answer of this question because i dont understand it

Why do oxygen have a strong attractive force for electrons

Calculate the h3o+ concentration in a solution of acetic acid if the concentration of molecular acetic acid present at equilibrium is 9.97x10-3 m and k for the dissociation is 1.86x10-5. ch3cooh(aq)+h2o(l)+> h3o+(aq)+ch3coo-(aq) show me how to get the answer.