What is the approximate molecule mass of dry air cointaining `78% N_(2) and 22% O_(2) `?

If average molecular mass of air is 29, then assuming N_(2) and O_(2) gases are there, which option are correct regarding composition of are? (i) 75% "by mass of" N_(2)" "(ii) 75% "by moles "N_(2)" "(iii)72.41% "by mass of" N_(2)

Calculate the molecular mass of the followings: N a 2 C O 3

What is the covalence of nitrogen in N_2O_5 ?

What is 22% Equals to

How many molecules of O2 are present in 1L air containing 80% volume of O2 at STP?

what is the percentage of nitrogen in the air?

Based upon the technique of reverse osmosis the approximate pressure required to desalinate sea water containing 2.5% (mass/volume) KNO_(3) at 27^(@) C will be

Calculate the mass of 10^20 molecules of H_2O .

The equilibrium constant K_(p) for the following reaction is 4.5 N_(2)O_(4)(g)hArr2NO_(2)(g) What would be the average molar mass ("in"g//mol) of an equilibriumm mixture of N_(2)O)(4) and NO_(2) formed by the dissociation of pure N_(2)O_(4) at a jtotal pressure of 2 atm ?