Calculate the force of attraction between k+
and an o2-
ion the centers of which are
separated by a distance of 1.5 nm

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

Which of the following signs of a chemical reaction are observed in the reaction of potassium with water? precipitate formed temperature change smell produced gas produced color change

If a polyatomic ionic compound has gained two hydrogen ions, then how does its name begin?