A spherical balloon of volume 3.94 103 cm3 contains helium at a pressure of 1.17 105 Pa. How many moles of helium are in the balloon if the average kinetic energy of the helium atoms is 3.60 10-22 J

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?