What is taking place during the process of sublimation? how is this process different from evaporation?

Solution:

These two process is different from each other by these way:

In sublimation, the vapor pressure of the liquid produced at the surface of a heated solid exceeds the pressure of the surround gas (like the atmosphere) so it immediately turns to gas instead of having a visible liquid phase. While,

In evaporation, the vapor pressure of a liquid from a melting solid is less than atmospheric pressure, so the liquid is stable and turns to vapor into the surrounding gas.

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;