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Vapor density =  mass / volume = 0.24 gms / 45 ml = 5.333 milligms / cc.
            = 5.333 gms/ litre = 5.333 kg /cubic meter
    but  pressure and temperature are not specified, which the volatile material has this density.

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Vapour density =mass/volume =0.24/45 =5.333milli g/cc =5.333gm/litre =5.333kg/cubic m
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