Please help with this , it’s very important

V1t2 = v2t1 is an expression of who’s law

The graph above shows how the price of cell phones varies with the demand quantity. the equilibrium price for cell phones is where both supply and demand quantities equal $100, 5,000 5,000, $100

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