The answer is a. a homogenous mixture
The mole fraction of a gaseous compound is equal to the ratio of the vapor pressure of the compound to the total pressure of the vessel. In this case, teh vapor pressure of tehe non-electrolyte is 760 - 745 = 15 mmHg. hence the mole fraction is 15 mm Hg / 760 mmHg equal to 0.0197
probably condensation and evaporation and freezing.. PROBABLY idk
16 is the mass of an atom of Oxygen
When the atomic number increases The atomic size will be larger.
