What is the pOH of a solution of 4.89 x 10^-5 M HBr? What is the pH of a solution of 6.10 x 10^-11 M LiOH?
What is the pH of a solution of 9.06 x 10^-8 M Ba(OH)2?

Please explain these thoroughly because I have no idea what to do. Thank you :D

Which statement describes the appearance of a temperature-vs.-time graph? a horizontal line shows that the temperature increases at a constant rate over time. a vertical line shows that the temperature decreases at a constant rate over time. horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. horizontal lines where the temperature increases are connected by upward-sloping lines where the temperature is constant for each phase.

If 10.g of agno3 is available, what volume of 0.25 m agno3 can be prepared

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al