In order for a liquid particle to become a gas it must,

(choose all that apply)
a overcome the attractive forces of other liquid particles
b overcome the attractive forces of other gas particles
c gain energy
d lose energy

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In order for liquid particles to become and or turn into gas particles, they most likely must overcome the attractive forces, usually hydrogen bonding and other London forces and or dipole dipole interactions depending if it is Nonpolar or polar, and gain energy, as it there is a change in energy and takes work for this phase change to occur.

The responses would be A and C.

Answerthis solution will not form a precipitateexplanationsolubility equilbrium:         pbf₂(s)  ⇄ pb²⁺(aq) + 2 f⁻(aq)the solubility product expression is    (we exclude solids from the equilibrium expression).now suppose we have the trial ion product q, which we can define as    then, we can interpret  q as the product of the concentration of the ions that we have and ksp as the product of the ion concentrations that are needed to form a saturated solution.if q > ksp, then that implies that there will be a surplus of ions that exceed the amount that is required to form a saturated solution. a precipitate will then form (the precipitate continually  forms until the surplus ions are removed and q is decreased to ksp's value).if q = ksp, the saturated solution that forms is barely saturated and the precipitate will be minimal.if q < ksp, then the ion concentration will not be enough to form a saturated solution (so no precipitate).using our information, we calculate the trial ion product:     since q = 2.7  × 10⁻⁸ < ksp =  4  ×  10⁻⁸, a precipitate will not form.

Answer(2) electrons;