Phosphoric acid is a triprotic acid with the follow Ka values: Ka1 = 7.2x10−3, Ka2 = 6.3x10−8, Ka3 = 4.2x10−13 Based on this information, What is the Ka of HPO42-? What is the Kb of HPO42-? Is HPO42- acidic, basic, or neutral?

During which time interval does the object travel approximately 10 meters

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.

How many neutrons does an element have if its atomic number is 50 and its mass number is 166