Plz need help Which statement best describes the role of plate tectonics in changes that occur on Earth?A. The movement of plates builds pressure that is released during an earthquake.B. Convection currents in the mantle cause mountain ranges to slowly collapse over time.C. The subduction of oceanic crust cools the mantle and prevents volcanic eruptions.D. Seafloor spreading causes ocean

Chlorine and water react to form hydrogen chloride and oxygen, like this: 2cl2 (g) + 2h2o (g) → 4hcl (g) + o2 (g) also, a chemist finds that at a certain temperature the equilibrium mixture of chlorine, water, hydrogen chloride, and oxygen has the following composition: compound concentration at equilibrium cl2 0.55m h2o 0.57m hcl 0.53m o2 0.34m calculate the value of the equilibrium constant kc for this reaction. round your answer to 2 significant digits.