A 60 grams sample of a compound, contained 38.43 grams of Lead, 17.83 grams of Carbon, and 3.74 grams of Hydrogen. Based off the information the empirical formula would be?

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?