Ahelium balloon with a volume of 2.75 l and pressure of 1.04 atm and 27 °c flies in the sky and reaches an altitude where the temperature is -15 °c and the pressure is 0.530 atm. calculate the final volume of the balloon

4.64 L

Explanation:

Given Initial pressure (P1) = 1.04 atm , initial volume (V1) = 2.75L and initial temperature (T1) = 27C = 273+27 = 300K

Also given that final pressure (P2) = 0.530 atm , final temperature (T2) = 15C = 273-15 = 258 K and let the final volume be (V2) = V

We know that an ideal gas follows PV=nRT

Here n and R are constant

so

V = 4.64L

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.