PLZ HELP I HAVE 8 MINUTES A buffer solution contains 500ml of 0.650 M Sr(La)2 and 500ml of 0.700 M HLa where the pKa (HLa)= 3.76. What is the pH of the buffer ?

What is the [oh-] in a solution with a poh of 3.90

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.

24. a sports ball is inflated to an internal pressure of 1.85 atm at room temperature (25 °c). if the ball is then played with outside where the temperature is 7.5 °c, what will be the new pressure of the ball? assume the ball does not change in volume nor does any air leak from the ball a) 0.555 atm b) 1.74 atm c) 1.85 atm d) 1.97 atm