If an electron in the n=9 energy level of a hydrogen atom relaxes down to the n=5 energy level, determine the energy of the photon (in kJ) released in the process.

The diagrams to the right show the distribution and arrangement of gas particles in two different containers. according to kinetic-molecular theory, which of the following statements is true? check all that apply. if the temperatures of both containers are equal, container a has greater pressure than container b. if the volume of container a decreased, its pressure would decrease. if the pressure in both containers is equal, container a has a lower temperature than container b.