Will the number of molecules be the same in equal weoights of different substances?

Is it possible to weigh one molecule using a weights of different substances?

The force of attraction between molecules of different substances is

The number of molecules in a gram molecule of a gas is called

How are the number of moles of a substance obtained from the mass of the substance ?

The escape velocity is same for different planets

Avogadro number is the number of molecules

______ is the phenomenon of accumulation of higher concentration of molecules of one substance on the surface of other substance than in the bulk.

The mean free path X of molecules is given by where n is the number of molecules per unit volume and d is the diameter of the molecules.

The mean free path lambda of molecules is given by where n id the number of molecules per unit volume and d is the diameter of the molecules.