Acube of a gold-colored metal with a volume of 59 cm3 has a mass of 980 g. the density of pure gold is 19.3 g/cm 3. is the metal pure gold? show calculations to justify your answer

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.