Question

Who gave relationship between molecular mass and vapour density

Answer 1

HELLO THERE!

Vapour density is the density of a vapour in relation to that of hydrogen. It may be defined as mass of a certain volume of a substance divided by mass of same volume of hydrogen. vapour density = mass of n molecules of gas / mass of n molecules of hydrogen.

The relationship is:

Molecular weight = 2 x Vapour Density.

PV = nRT

n= X/M

X mass of the gas

M molecualr weight of the gas

D = m/V

PV = (X/M) (RT)

P = (D/M)(RT

D =PM/RT

From the above, the more higher the M the D is higher (vapour heavier). The more small the M the density is smaller (vapour lighter).

Answer 2

Answer:

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