the density of air at STP is 0.0013g ml its vapour density is

we know thar at stp 22.4lt of everyvgas occupy 1 mole. 1 mole corresponds to its molecular mass molecular mass=2×vapour density given density=.001293g/cm^3 1 ml has .001293 gm 22.4 ml has .001293×22.4/10^-3 molecupar mass=28.97 vapour density= mol. mass/2 = 14.485
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