When magnesium combines with sulfur to form magnesium sulfide it is oxidized to mg2+ which statement is true about this reaction

If you chip a tooth, most likely you will go to the dentist to have the missing material filled in. currently the material used to fill in teeth is a polymer that is flexible when put in, yet is hardened to the strength of a tooth after irradiation with blue light at a wavelength of 461 nm. what is the energy in joules for a photon of light at this wavelength?

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp

Heat is the total potential energy of a substance that can be transferred. true false