Asubstance with a high poh would likely have which of the following?
a low [h] and a high ph
a low [oh-] and a high ph
a high [oh-] and a low ph
a high [h+] and a low ph

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?