The ability of a solute to pass through is influenced by characteristics like size, solubility, and specific attributes of the target membrane.
When molecules are sufficiently small, they are able to move through the semi-permeable membrane, because permeability inversely correlates with molecule size.
There are no h orbitals; the highest level of filling for electronic configurations is limited to the f subshell. This particular subshell can hold a maximum of 14 electrons with varying quantum energies across their respective orbitals.
Answer: Determining clear boundaries for a system is challenging because one must grasp specific concepts involved, such as boundaries and environments that can be either advantageous or detrimental. An illustrative example might be the OpenLearn course, which covers Computing & IT.