How can Cassie use the different layers of the formation to date the rocks?

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(> h3o^+(aq)+ch3coo^-(aq)

Find the mass in grams of 1.37x1020 particles of h3po4

Which of the following is most likely true about water in chemical solutions?