Why does the vapor pressure of a solution decrease when an ionic compound is added to it? 1) Most solutes have a positive heat of solvation, causing the temperature of the solution to decrease.
2)There are fewer solvent molecules at the surface, so fewer can vaporize and leave the solution.
3) The mole fraction of solvent is higher, causing a lower vapor pressure.

Subduction zones occur on earth where dense oceanic crust dives under more buoyant continental crust. these boundaries are characterized by a deep ocean trench next to a high continental mountain range, large numbers of earthquakes and volcanoes. all of this is further evidence for the a) big bang theory b) origin of the species eliminate c theory of plate tectonics d theory of natural selection 4 sedimentary rocks found high in the himalayen mountain

The variability in marine salinity between habitats does not impact the fish living there. select the best answer from the choices provided t f

Which of the following is a physical property flammability heat of combustion solubility and toxicity