Estimate the total number of molecules inclusive of oxygen, nitrogen, water vapour and other constituents in a room of capacity `30m^(3)` at a temperature of `30^(@)C` and 1 atmosphere pressure.

Estimate the total number of air molecules (inclusive of oxygen, nitrogen, water vapour and other constituents) in a room of capacity 25.0 m^(3) at a temperature of 27^(@) C . And 1 atm pressure. (Boltzmann constant = 1.38 xx 10^(-23) JK^(-1)) .

The total number of air molecules in a room of capacity 20 m^(3) at a temperature of 27^(@)C and 1 atm pressure is

Calculate the pressure (in N/m^2 )exerted by a mixture of 8 g of oxygen, 14 g of nitrogen, and 22 g of carbon dioxide in a container of 30l at a temperature of 27^@C .

A flask contains 10^(-3)m^(3) gas. At a temperature, the number of molecules of oxygen at 3.0xx10^(22) . The mass of an oxygen molecule is 5.3xx10^(-26) kg and at that temperature the rms velocity of molecules is 400m/s. The pressure in N//m^(2) of the gas in the flask is ..............

The number of air molecules in a (5m xx 5m xx 4m) room at standard temperature and pressure is of the order of

(a) What is meant by: (i) Colligative properties (ii)Molality of a solution (b) What concentration of nitrogen should be present in a glass of water at room temperature? Assume a temperature of 25^(@)C , a total pressure of 1 atmosphere and mole fraction of nitrogen in air of 0.678 . [ K_(H) for nitrogen =8.42xx10^(-7) M//mm Hg ]

The density of water is 1000 kg m^(-3) . The density of water vapour at 100^(@) C and 1 atmospheric pressure is 0.6 kg m^(-3) . The volume of a molecule multiplied by the total number gives what is called, molecular volume. Estimate the ratio (or fraction) of the molecular volume to the total volume occupied by the water vapour under the above conditions of temperature and pressure.