SUB TO MY YT ITS CALLED “ Angel Dent”

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?

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

What are the major types of a chemical compound