Define 'molecular mass' of a substance.

(a) Define gram molecular mass of a substance. How much is the gram molecular mass of oxygen ? (b) If sulphur exists as S_(8) molecules, calculate the number of moles in 100 g of sulphur. (S = 32 u)

Define molecular mass of a subtance?

What is Osmotic pressure ? How will you determine the molecular mass of a substance by this method ?

How will you determine the molecular mass of a substance from osmotic pressure ?

How many molecules are present in one gram molecular mass of a substance ?

Define gram molecular mass.

Rate of diffusion is directly proportional to the square root of molecular mass of substance.

Rate of diffusion is directly proportional to the square root of molecular mass of substance.

Define the term osmotic pressure. Describe how the molecular mass of a substance can be determined by a method based on measurement of osmotic pressure ?

Define the term ' osmotic pressure' . Descibe how the molecular mass of a substance can be determined on the basis of pressrure measurement.