Ascientist develops a new experiment to test atomic theory. his results do not agree with the theory.
what will most likely happen next

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

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?

Marcel just purchased 1.69 grams of iron fillings in order to make living putty for his 6 year old niece. how many moles of iron are made in his sample?