A gaseous mixture of H2 ​and CO2 ​contains 66 mass % of CO 2 ​ The vapour density of the mixture is:

 Answer Key: VD :2.7

The vapour density of a mixture containing NO2 and N2O4 is 27.6 . Mole fraction of NO2 in the mixture is:

Answer Key: 0.2 Mole

N2O4 on decomposition gives its monomer NO2 and they are found to be in equilibrium at 300 K. if the VD of such a mixture is 41.4 the calculate % composition by (1) Moles of NO2 and N2O4 (2) By mass O2

Answer Key: (1) 20% and 80% (2) 11.1%

A compound of nitrogen and oxygen was found to contain 7: 16 by mass N and O respectively. Calculate molecular formula if vapour density is 46.

 Answer Key: ( N2O4)

A mixture of blue and green balls contains 25% by number blue balls. Mass of each blue balls is 40 gm and mass of each green balls is 20 gm calculate (1) Average mass of ball (2) % by mass

Answer Key: (1) 25 gm (2) 40 %