In which of the following compounds, an element exhibits two different oxidation states.
Hà
NH4OH
NH, NO
PH

What does a particular point on a line of a phase diagram represent? o a. the maximum temperature a substance can exist at without bonds breaking b. the pressure created by the kinetic energy of molecules at a particular temperature c. the melting point or boiling point of a substance at a specific pressure d. the conditions in which temperature and pressure have equal effects on a substance

Ahypothesis must be testable and falsifiable to be considered scientific a. trueb. false

The fact that the total amount of energy in a system remains constant is a(n)