A molar volume of gas has a density of #1.7824*g*L^-1# at #"STP"#. What is the molecular mass of this gas?
Well the molar volume of an Ideal Gas at
We assume Ideal Gas behaviour..........
And thus, at
You should be able to identify this gas
we know , 22.4 L of any gas gas at STP is 1 mol of the gas.
We have been given that the density of an elemental gas is 1.7824g/L at STP.
Hence mass of 22.4 L of the elemental gas gas at STP is its molar mass.
Hence molar mass