How many moles oxygen atoms are contained in 1.25 X 10 -2g CuSO4 - 5H2O?

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.

When a nucleus absorbs a neutron and then breaks apart, there are many products of the reaction. what is not a product of a nuclear fission reaction

What is the molar mass of potassium nitrate, kno3