If an object has a mass of 42 kg and a volume of 2m3 what is its density

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)

What does x represent in the formula for the compound xcl4?

How can you use chemical equations to predict the products of the reaction you can carry out?