Thermodynamics

Yes, if they are in contact they will be at the same temperature. Does that answer your question?

Hi, there will be just very little bit different ,

hi,Vapor pressure means the pressure exerted by the gas in equilibrium with a solid or liquid in a closed container at a given temperature. The vapor pressure is directly proportional to the temperature of the liquid or solid. But there won't be any temperature variation between the liquid/solid and vapor. Its my opinion only i don't know exactly.

That's about right, but worth adding that the vacuum has nothing to do with it. The partial pressure of the vapour is constant at a given temperature irrespective of other gases present. Also the vapour pressure quoted in the literature is the saturated vapour pressure, i.e. the pressure of the vapour when there is still liquid water present. If all the liquid has evaporated, the actual vapour pressure is less than the saturated vapour pressure. From the saturated vapour pressure you can calculate the mass of vapour present at saturation. If the actual mass is less than this, i.e. unsaturated, the partial pressure is proportional to the mass.

Cheers.........Codey