A 0.174 M weak acid solution has a pH of 4.41. Find Ka for the acid.

Nonpoint source pollution is difficult to control because it

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 might this scientific phenomena be explained? a paper clip floats on water.