5. When Zn plate is immersed in an HCl solution hydrogen gas bubbles can be seen. List all the mechanistic steps of the Zn + 2H+ reaction that account for this observation.
6. When 0.1 L of 0.1 M Mg(OH)2 solution is mixed with 0.1 L of 0.1 M of HNO3 solution, what is the the pH and the concentration of Mg2+ ions of the resulting mixture?
8. Reaction A + B ->P proceeds to completion. When you add 2 moles of A and 3 moles of B to an evacuated reaction chamber what is the result?