what is gram molecular volume and gram molecular weight 

Dear student, Gram molecular volume is defined as volume occupied by 1 mole of any gas. The gram molecular volume is fixed at standard temperature and pressure which is equal to 22.4L Hence 1 mole of any gas at S.T.P occupies a volume of 22.4L. Gram molecular weight is the mass of one mole of a compound expressed in grams to the molecular weight. Thanks and regards