5.6 lit of gas at NTP weigh equal to 8 gm the vapour density of gas is
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Density = mass / volume
In this case our mass is 8 grams.
The volume is 5.6 litres
Since density is given as either Kg/m³ or g/cm³ we need to convert the units to matching units.
In our case we convert the litres to cm³.
This becomes :
1000cm³ = 1 litre
5.6 × 1000 = 5600cm³
Density = 8/5600 = 0.0014286 g/cm³
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