Simplified. the absorption spectra of ions have been used to identify the presence of the elements in the atmospheres of the sun and other stars. what is the energy of a photon (in j) that is absorbed by he+ ions, when an electron is excited from the bohr orbit with n = 1 to the n = 8 state? the energy of an electron in the nth level is - bz2 en =- n? where b = 2.18 x 10-18 j and z = charge on

Adeuteron, 21h, is the nucleus of a hydrogen isotope and consists of one proton and one neutron. the plasma of deuterons in a nuclear fusion reactor must be heated to about 3.02×108 k . what is the rms speed of the deuterons? express your answer using two significant figures.

What happens to the average kinetic energy of a gas when the particles of the gas collide against each other at a constant temperature and volume? explain your answer.

Some molecular compounds, such as hcl, ionize completely in solution. for molecular compounds such as h2co3, most molecules do not ionize in solution. which describes the properties of these two solutes? a. hcl and h2co3 have the same effect on the properties of the solution. b. hcl raises the freezing point of water more than h2co3 does. c. hcl raises the boiling point of water more than h2co3 does.