Vapour Density = a:b where 'a' is:
Mass of certain volume of gas or vapour
Mass of 1 mole of hydrogen
Mass of 1 molecule of hydrogen
Mass of hydrogen
Vapour Density = a:b where 'a' is mass of certain volume of gas or vapour.
Which of the following defines the ratio for mass of 1 molecule of gas or vapour to mass of 1 atom of hydrogen?