3.Solve for X and Y
38.7= 3X+2.5Y

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?

Avariable that is not being directly tested during an experiment should be

Which sample at stp has the same number of atoms as 18 liters of ne at stp