Question

a) If the volume of a flask is 165 mL and the mass of the vapor in the flask is 0.2136 grams, what is the density of vapor in the flask?



b)If the temperature of the vapor is 25 degrees Celsius, what is the molecular weight of the vapor? (Assume the gas pressure to be 1.00 atm.)
a.
density = mass vapor in grams/volume in mL

b.
I would use the modified ideal gas formula of PM = dRT where P is pressure in atm, M is molar mass, d is density in g/L (note, not g/mL), R is 0.08205 and T is 298K.
4453

Related Questions

a volatile liquid was allowed to evaporate in a 43.298g flask that has a total volume of 252 mL.,the... A liquid was analyzed to be 54.5% C, 9.10% H, and 36.4% O. An empty flask, whose mass was 45.32 g, w... A 500 mL flask has a measured volume of 586.0 mL. A 0.608g sample of an unknown vapor occupies the...