A 0.25 m solution of a salt nax(aq) has a ph of 11.45. what is the ka of the hypothetical acid hx?

Apump contains 0.5 l of air at 203 kpa.you draw back on the piston of the pump, expanding the volume until the pressure reads 50.8 kpa. what is the new volume of the air pump

Which is the solubility product expression for caf2(s)?  [ca2+]/[f–]2  [ca2+][f2–]  [ca]+[f]2  [ca2+][f–]2

Is 343 in the sequence -5, -2, 1, 4, 7