The temperature of a piece of copper with a mass of 95.4g increases from 298.0K to 321.1K when the metal absorbs 849J of energy as heat. What is the specific heat of copper

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.