After 1911, most scientists accepted the theory that nucleus of an atom was very dense and very small and has a positive charge. what led scientists to accept this theory?

the reaction mixture contains some ammonia, plus a lot of unreacted nitrogen and hydrogen. the mixture is cooled and compressed, causing the ammonia gas to condense into a liquid. the liquefied ammonia is separated and removed. the unreacted nitrogen and hydrogen are then recycled back into the reactor .

i think is conclusions.i think so