The law of conversation of mass states that the mass of the reactant is ___ the mass of products

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?

Calculate the mass of carbon in 97.0 g of sucrose c12h22o11

As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit