20 POINTS PLEASE EXPLAIN TOO!

(Include an explanation on how to solve using 6.02 x 10^23. How to set up the problem is what I’m confused about)

Testosterone molecules : 2.11 x 10¹⁵

Further explanation

The mole is the number of particles(atoms,molecules,ions) contained in a substance

1 mol = 6.02.10²³  particles

Concentration : 3.5.10⁻⁹ M

There is one s orbital, and there are three p orbitals, five d orbitals, and seven f orbitals. thus, the answer is b. do not confuse the number of orbitals in a subshell with the number of electrons the subshell can hold. each orbital can hold two electrons, so the capacity of an nf subshell is 14 electrons.