What is the number of atoms present in 4.25 L of ammonia gas at 373 K? Given, molar volume (Volume of 1 mol) of NH 3 at 373 K is 42.5 Lmol -1

There are 6.023*10^22 atoms present in 4.25L of NH3 at 373K

Explanation:

Given:

1 mol of NH3 at 373K= 42.5L/mol

Thus, No. of mol of NH3 at 373K= Given Volume/Molar volume

=4.25L/42.5L/mol

=0.1 mol

So, 1 mole of NH3= 6.023*10^23 atoms

0.1 mol of NH3= 6.023*10^23*0.1 atoms

= 6.023*10^22 atoms

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.

let that person have a turn to speak : )