Use the ideal Gas Law to calculate the number of moles (n) of helium in a
4000 Liter weather balloon near the top of Mt. Rainier with a pressure of
0.6 atm and temperature of 260K.*

0.0089 mol

7,600,000 mol

2400 mol

0236.9 mol

112.6 mol

zfoods? ok, pressure is used to keep the heat inside and to keep the food perfect.

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.

answerlinnaeus;