The following properties are either physical or chemical. Which one is different from the rest based on those two categories? (5 points) Boiling point
Density
Ductility
Heat of combustion

What is the equilibrium constant of aa+bb=cc+dd

In an investigation that uses the scientific method, which step immediately follows making a hypothesis? o summarizing the results o asking a question o making observations designing an experiment mark this and retum save and exit next submit

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.