Find the temperature at which ethanol boils on a day in the mountains when the barometric pressure is 547 mmhg. (given: the heat of vaporization of ethanol is 39.3 kj/mol; the normal boiling point of ethanol is 78.3°c; (r = 8.314j/ k • mol).

in chemistry, adhesion and cohesion are attractive forces that exist between molecules. they hold the molecules together from each other. they are different in that adhesive force exists between molecules of different substance while cohesive force happens between molecules of same substance.

adhesion between water and glass causes water molecules at the edge of water and glass interface to climb up the wall in a narrow glass tube. this is called capillary action. cohesion is what gives glass its shape and causes water to form a droplet.