If 30l of oxygen is cooled from 200 degrees c to 1 degree c at constant pressure, what is the new volume of the oxygen?

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?

What is the molecular weight of copper

I’m an electrically neutral atomic any element, there are equal numbers of