Find the approx. number of molecules contained in a vessel of volume `7 `litres at `0^(@)C at 1.3 xx 10^(5)` pascal

The number of molecules contained in a drop of water with volume 0.5 c.c. at 4^@C is

Find the number of molecules in 1cm^(3) of an ideal gas at 0^(@)C and at a pressure of 10^(-5)mm of mercury.

A vessel of volume V_0 contains N molecule of an ideal gas. Find the probability of n molecules getting into a certain separated part of the vessel of volume V . Examine, in particle, the case V = V_0//2 .

The molar gas volume at S.T.P is 22.4 litre and Avogadro's number is 6.023 xx 10^(23) . Calculate (i) number of gas molecules per unit volume (ii) radius of gas molecule when mean free path is 1.1 xx 10^(-8) m .

A rigid vessel of volume 0.50m^(3) containing H_(2) at 20.5^(@)C and a pressure of 611 xx 10^(3) Pa is connected to a second rigid vessel of volume 0.75 m^(3) containing Ar at 31.2^(@)C at a pressure of 433xx10^(3) Pa. A valve separating the two vessels is opened and both are cooled to a temperature of 14.5^(@)C . What is the final pressure in the vessels?

A rigid vessel of volume 0.50m^(3) containing H_(2) at 20.5^(@)C and a pressure of 611 xx 10^(3) Pa is connected to a second rigid vessel of volume 0.75 m^(3) containing Ar at 31.2^(@)C at a pressure of 433xx10^(3) Pa. A value separating the two vessels is opened and both are cooled to a temperature of 14.5^(@)C . What is the final pressure in the vessels?

The total kinetic energy of 8 litres of helium molecules at 5 atmosophere pressure will be (1 atmosphere =1.013xx10^(5) pascal)

A vessel containing 5 litres of a gas at 0.8 m pressure is connected to an evacuated vessel of volume 3 litres. The resultant pressure inside with be (assuming whole system to be isolated)