I need help finding the equilibrium constant.

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

What type of chemical reaction occurs between silver nitrate (agno3) and copper (cu)? the equation i was given is 2agno3 + cu —> 2ag+ cu(no3)2.

What lessons does the history and study of the periodic table offer to other fields of science, and the pursuit science more generally