Which answer best completes the following sentence?

bonding exists within the same molecule, and forces exist between different molecules.

hydrogen, ionic

ionic, covalent

intermolecular, london dispersion< my answer, correct?

ionic and covalent, intermolecular

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. in the first step, nitrogen and hydrogen react to form ammonia: (g) (g) (g) in the second step, ammonia and oxygen react to form nitric acid and water: (g) (g) (g) (g) calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .

Which process describes vaporization that takes place below the surface of a liquid? condensation melting boiling evaporation