- #1
Hunus
- 15
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How does one use ratios of gas densities to estimate the molecular mass and find the molecular
formulas?
formulas?
MrSid said:Conceptually keep in mind Ideal Gas Law PV=nRT can allow one to show that at STP one mole of gas molecules exist in 22.4 liters of volume.
since gas density is gms/ liter (mass/volume) one can calculate the gms of gas from the density to make 22.4 liters or one mole of gas... gms per mole then gives a Gram Molecular Weight
If the density is given at a different temperature and pressure recalculate it for STP
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