7. A sample of gas has a volume of 15.0 L when at a temperature of 220 K and a pressure of 310kPa. (Ideal gas Law)
a. 4a. Find the number of moles of gas.
b.
4b. If there are 52 g of the gas in the sample, which noble gas is it?

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?